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31424010431 = 1112722493923
BaseRepresentation
bin11101010001000001…
…000101100010111111
310000002222211010110012
4131101001011202333
51003324021313211
622234101333435
72161500452522
oct352101054277
9100088733405
1031424010431
1112366042160
12610ba0727b
132c6a3cc518
14174160abb9
15c3db62d8b
hex7510458bf

31424010431 has 8 divisors (see below), whose sum is σ = 34550667264. Its totient is φ = 28342341720.

The previous prime is 31424010403. The next prime is 31424010433. The reversal of 31424010431 is 13401042413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-31424010431 is a prime.

It is a super-2 number, since 2×314240104312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31424010397 and 31424010406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31424010433) 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, 11245565 + ... + 11248358.

It is an arithmetic number, because the mean of its divisors is an integer number (4318833408).

Almost surely, 231424010431 is an apocalyptic number.

31424010431 is a deficient number, since it is larger than the sum of its proper divisors (3126656833).

31424010431 is a wasteful number, since it uses less digits than its factorization.

31424010431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22494061.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31424010431 its reverse (13401042413), we get a palindrome (44825052844).

The spelling of 31424010431 in words is "thirty-one billion, four hundred twenty-four million, ten thousand, four hundred thirty-one".

Divisors: 1 11 127 1397 22493923 247433153 2856728221 31424010431