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12431033020 = 2257227391159
BaseRepresentation
bin10111001001111001…
…01000001010111100
31012002100011220111101
423210330220022330
5200424321024040
65413304102444
7620024015530
oct134474501274
935070156441
1012431033020
1152a9aa310a
1224ab164a24
131231550353
1485cd7dbc0
154cb51409a
hex2e4f282bc

12431033020 has 48 divisors (see below), whose sum is σ = 29965985280. Its totient is φ = 4243281984.

The previous prime is 12431033011. The next prime is 12431033033. The reversal of 12431033020 is 2033013421.

12431033020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163800 + ... + 227359.

It is an arithmetic number, because the mean of its divisors is an integer number (624291360).

Almost surely, 212431033020 is an apocalyptic number.

12431033020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12431033020 is an abundant number, since it is smaller than the sum of its proper divisors (17534952260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12431033020 is a wasteful number, since it uses less digits than its factorization.

12431033020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391402 (or 391400 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 12431033020 its reverse (2033013421), we get a palindrome (14464046441).

The spelling of 12431033020 in words is "twelve billion, four hundred thirty-one million, thirty-three thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 227 454 908 1135 1589 2270 3178 4540 6356 7945 15890 31780 391159 782318 1564636 1955795 2738113 3911590 5476226 7823180 10952452 13690565 27381130 54762260 88793093 177586186 355172372 443965465 621551651 887930930 1243103302 1775861860 2486206604 3107758255 6215516510 12431033020