31311313020001 has 16 divisors (see below), whose sum is σ = 38165884356096. Its totient is φ = 25075170372096.

The previous prime is 31311313019999. The next prime is 31311313020017. The reversal of 31311313020001 is 10002031311313.

It is not a de Polignac number, because 31311313020001 - 2¹ = 31311313019999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31311313020041) 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, 960276681 + ... + 960309286.

It is an arithmetic number, because the mean of its divisors is an integer number (2385367772256).

Almost surely, 2^{31311313020001} is an apocalyptic number.

It is an amenable number.

31311313020001 is a deficient number, since it is larger than the sum of its proper divisors (6854571336095).

31311313020001 is a wasteful number, since it uses less digits than its factorization.

31311313020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920586128.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31311313020001 its reverse (10002031311313), we get a palindrome (41313344331314).

The spelling of 31311313020001 in words is "thirty-one trillion, three hundred eleven billion, three hundred thirteen million, twenty thousand, one".