213431030252 has 48 divisors (see below), whose sum is σ = 411617560704. Its totient is φ = 96827346000.

The previous prime is 213431030179. The next prime is 213431030311. The reversal of 213431030252 is 252030134312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2746127 + ... + 2822777.

It is an arithmetic number, because the mean of its divisors is an integer number (8575365848).

Almost surely, 2^213431030252 is an apocalyptic number.

213431030252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

213431030252 is a deficient number, since it is larger than the sum of its proper divisors (198186530452).

213431030252 is a wasteful number, since it uses less digits than its factorization.

213431030252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77211 (or 77187 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 213431030252 its reverse (252030134312), we get a palindrome (465461164564).

The spelling of 213431030252 in words is "two hundred thirteen billion, four hundred thirty-one million, thirty thousand, two hundred fifty-two".