31312330133101 has 4 divisors (see below), whose sum is σ = 31493326261212. Its totient is φ = 31131334004992.

The previous prime is 31312330133093. The next prime is 31312330133137. The reversal of 31312330133101 is 10133103321313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12317987070601 + 18994343062500 = 3509699^2 + 4358250^2 .

It is a cyclic number.

It is not a de Polignac number, because 31312330133101 - 2³ = 31312330133093 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 (31312330133191) 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 3 ways as a sum of consecutive naturals, for example, 90498063796 + ... + 90498064141.

It is an arithmetic number, because the mean of its divisors is an integer number (7873331565303).

Almost surely, 2^{31312330133101} is an apocalyptic number.

It is an amenable number.

31312330133101 is a deficient number, since it is larger than the sum of its proper divisors (180996128111).

31312330133101 is a wasteful number, since it uses less digits than its factorization.

31312330133101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180996128110.

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 31312330133101 its reverse (10133103321313), we get a palindrome (41445433454414).

The spelling of 31312330133101 in words is "thirty-one trillion, three hundred twelve billion, three hundred thirty million, one hundred thirty-three thousand, one hundred one".