213431102331 has 16 divisors (see below), whose sum is σ = 287526247968. Its totient is φ = 140812992000.

The previous prime is 213431102323. The next prime is 213431102377. The reversal of 213431102331 is 133201134312.

It is not a de Polignac number, because 213431102331 - 2³ = 213431102323 is a prime.

It is a super-2 number, since 2×213431102331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213431100331) 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, 491805 + ... + 817761.

It is an arithmetic number, because the mean of its divisors is an integer number (17970390498).

Almost surely, 2^213431102331 is an apocalyptic number.

213431102331 is a deficient number, since it is larger than the sum of its proper divisors (74095145637).

213431102331 is a wasteful number, since it uses less digits than its factorization.

213431102331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328222.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 213431102331 its reverse (133201134312), we get a palindrome (346632236643).

The spelling of 213431102331 in words is "two hundred thirteen billion, four hundred thirty-one million, one hundred two thousand, three hundred thirty-one".