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23132371431 = 3134391351111
BaseRepresentation
bin10101100010110010…
…111111100111100111
32012201010122020001110
4111202302333213213
5334333341341211
614343223000103
71446145625061
oct254262774747
965633566043
1023132371431
1198a0691044
124596b99033
132248628160
141196308731
15905c5aea6
hex562cbf9e7

23132371431 has 16 divisors (see below), whose sum is σ = 33291399680. Its totient is φ = 14202868320.

The previous prime is 23132371411. The next prime is 23132371447. The reversal of 23132371431 is 13417323132.

It is not a de Polignac number, because 23132371431 - 219 = 23131847143 is a prime.

It is a super-2 number, since 2×231323714312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23132371411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 658435 + ... + 692676.

It is an arithmetic number, because the mean of its divisors is an integer number (2080712480).

Almost surely, 223132371431 is an apocalyptic number.

23132371431 is a deficient number, since it is larger than the sum of its proper divisors (10159028249).

23132371431 is a wasteful number, since it uses less digits than its factorization.

23132371431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351566.

The product of its digits is 9072, while the sum is 30.

Adding to 23132371431 its reverse (13417323132), we get a palindrome (36549694563).

The spelling of 23132371431 in words is "twenty-three billion, one hundred thirty-two million, three hundred seventy-one thousand, four hundred thirty-one".

Divisors: 1 3 13 39 439 1317 5707 17121 1351111 4053333 17564443 52693329 593137729 1779413187 7710790477 23132371431