31202020213 has 16 divisors (see below), whose sum is σ = 38443144320. Its totient is φ = 24661175616.

The previous prime is 31202020177. The next prime is 31202020217.

31202020213 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31202020213 - 2²⁵ = 31168465781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31202020217) 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, 94858 + ... + 267211.

It is an arithmetic number, because the mean of its divisors is an integer number (2402696520).

Almost surely, 2^31202020213 is an apocalyptic number.

It is an amenable number.

31202020213 is a deficient number, since it is larger than the sum of its proper divisors (7241124107).

31202020213 is a wasteful number, since it uses less digits than its factorization.

31202020213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363036.

The product of its (nonzero) digits is 144, while the sum is 16.

It can be divided in two parts, 312020 and 20213, that added together give a palindrome (332233).

The spelling of 31202020213 in words is "thirty-one billion, two hundred two million, twenty thousand, two hundred thirteen".