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31454024020 = 2252864354907
BaseRepresentation
bin11101010010110011…
…100101000101010100
310000012002021222100121
4131102303211011110
51003404212232040
622241052521324
72162313535636
oct352263450524
9100162258317
1031454024020
1112380a81881
126119a80244
132c736aa743
1417455c0a56
15c415e0c4a
hex752ce5154

31454024020 has 24 divisors (see below), whose sum is σ = 66056959584. Its totient is φ = 12580941216.

The previous prime is 31454024011. The next prime is 31454024023. The reversal of 31454024020 is 2042045413.

It is a happy number.

It is a super-3 number, since 3×314540240203 (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31454024023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 545407 + ... + 600313.

It is an arithmetic number, because the mean of its divisors is an integer number (2752373316).

Almost surely, 231454024020 is an apocalyptic number.

It is an amenable number.

31454024020 is an abundant number, since it is smaller than the sum of its proper divisors (34602935564).

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

31454024020 is a wasteful number, since it uses less digits than its factorization.

31454024020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83559 (or 83557 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 31454024020 its reverse (2042045413), we get a palindrome (33496069433).

The spelling of 31454024020 in words is "thirty-one billion, four hundred fifty-four million, twenty-four thousand, twenty".

Divisors: 1 2 4 5 10 20 28643 54907 57286 109814 114572 143215 219628 274535 286430 549070 572860 1098140 1572701201 3145402402 6290804804 7863506005 15727012010 31454024020