31313322001 has 24 divisors (see below), whose sum is σ = 36562609440. Its totient is φ = 26715312000.

The previous prime is 31313321957. The next prime is 31313322017. The reversal of 31313322001 is 10022331313.

It is not a de Polignac number, because 31313322001 - 2⁷ = 31313321873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31313322001.

It is not an unprimeable number, because it can be changed into a prime (31313322071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12726 + ... + 250576.

It is an arithmetic number, because the mean of its divisors is an integer number (1523442060).

Almost surely, 2^31313322001 is an apocalyptic number.

It is an amenable number.

31313322001 is a deficient number, since it is larger than the sum of its proper divisors (5249287439).

31313322001 is a wasteful number, since it uses less digits than its factorization.

31313322001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237937 (or 237924 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31313322001 its reverse (10022331313), we get a palindrome (41335653314).

The spelling of 31313322001 in words is "thirty-one billion, three hundred thirteen million, three hundred twenty-two thousand, one".