31002002213 has 64 divisors (see below), whose sum is σ = 42688880640. Its totient is φ = 21787978752.

The previous prime is 31002002209. The next prime is 31002002231. The reversal of 31002002213 is 31220020013.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31002002213 - 2² = 31002002209 is a prime.

It is a super-2 number, since 2×31002002213² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31002002293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8316356 + ... + 8320082.

It is an arithmetic number, because the mean of its divisors is an integer number (667013760).

Almost surely, 2^31002002213 is an apocalyptic number.

It is an amenable number.

31002002213 is a deficient number, since it is larger than the sum of its proper divisors (11686878427).

31002002213 is a wasteful number, since it uses less digits than its factorization.

31002002213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 31002002213 its reverse (31220020013), we get a palindrome (62222022226).

The spelling of 31002002213 in words is "thirty-one billion, two million, two thousand, two hundred thirteen".