31102302213 has 32 divisors (see below), whose sum is σ = 48894088320. Its totient is φ = 19472705280.

The previous prime is 31102302199. The next prime is 31102302229. The reversal of 31102302213 is 31220320113.

It is not a de Polignac number, because 31102302213 - 2⁵ = 31102302181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31102302293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138106 + ... + 285092.

It is an arithmetic number, because the mean of its divisors is an integer number (1527940260).

Almost surely, 2^31102302213 is an apocalyptic number.

It is an amenable number.

31102302213 is a deficient number, since it is larger than the sum of its proper divisors (17791786107).

31102302213 is a wasteful number, since it uses less digits than its factorization.

31102302213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147474 (or 147468 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31102302213 its reverse (31220320113), we get a palindrome (62322622326).

The spelling of 31102302213 in words is "thirty-one billion, one hundred two million, three hundred two thousand, two hundred thirteen".