31042043523 has 12 divisors (see below), whose sum is σ = 44840082768. Its totient is φ = 20693968560.

The previous prime is 31042043509. The next prime is 31042043569. The reversal of 31042043523 is 32534024013.

31042043523 is a `hidden beast` number, since 3 + 104 + 204 + 352 + 3 = 666.

It is not a de Polignac number, because 31042043523 - 2⁵ = 31042043491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31042045523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 373338 + ... + 448848.

It is an arithmetic number, because the mean of its divisors is an integer number (3736673564).

Almost surely, 2^31042043523 is an apocalyptic number.

31042043523 is a deficient number, since it is larger than the sum of its proper divisors (13798039245).

31042043523 is a wasteful number, since it uses less digits than its factorization.

31042043523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121194 (or 121191 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 31042043523 its reverse (32534024013), we get a palindrome (63576067536).

The spelling of 31042043523 in words is "thirty-one billion, forty-two million, forty-three thousand, five hundred twenty-three".