31513101323 has 8 divisors (see below), whose sum is σ = 34379213616. Its totient is φ = 28647203200.

The previous prime is 31513101313. The next prime is 31513101329. The reversal of 31513101323 is 32310131513.

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 2^k-31513101323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31513101329) 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, 548615 + ... + 603327.

It is an arithmetic number, because the mean of its divisors is an integer number (4297401702).

Almost surely, 2^31513101323 is an apocalyptic number.

31513101323 is a deficient number, since it is larger than the sum of its proper divisors (2866112293).

31513101323 is a wasteful number, since it uses less digits than its factorization.

31513101323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107085.

The product of its (nonzero) digits is 810, while the sum is 23.

Adding to 31513101323 its reverse (32310131513), we get a palindrome (63823232836).

The spelling of 31513101323 in words is "thirty-one billion, five hundred thirteen million, one hundred one thousand, three hundred twenty-three".