31231300331023 has 16 divisors (see below), whose sum is σ = 33699669796800. Its totient is φ = 28772358600960.

The previous prime is 31231300331009. The next prime is 31231300331041. The reversal of 31231300331023 is 32013300313213.

It is a de Polignac number, because none of the positive numbers 2^k-31231300331023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31231300311023) 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, 190029198 + ... + 190193476.

It is an arithmetic number, because the mean of its divisors is an integer number (2106229362300).

Almost surely, 2^{31231300331023} is an apocalyptic number.

31231300331023 is a deficient number, since it is larger than the sum of its proper divisors (2468369465777).

31231300331023 is a wasteful number, since it uses less digits than its factorization.

31231300331023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192882.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 31231300331023 its reverse (32013300313213), we get a palindrome (63244600644236).

The spelling of 31231300331023 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred million, three hundred thirty-one thousand, twenty-three".