31040103423 has 16 divisors (see below), whose sum is σ = 47830659840. Its totient is φ = 17537906496.

The previous prime is 31040103403. The next prime is 31040103427. The reversal of 31040103423 is 32430104013.

It is not a de Polignac number, because 31040103423 - 2⁶ = 31040103359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 31040103423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31040103427) 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, 8302065 + ... + 8305802.

It is an arithmetic number, because the mean of its divisors is an integer number (2989416240).

Almost surely, 2^31040103423 is an apocalyptic number.

31040103423 is a deficient number, since it is larger than the sum of its proper divisors (16790556417).

31040103423 is a wasteful number, since it uses less digits than its factorization.

31040103423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16607966.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31040103423 its reverse (32430104013), we get a palindrome (63470207436).

The spelling of 31040103423 in words is "thirty-one billion, forty million, one hundred three thousand, four hundred twenty-three".