213012334131 has 4 divisors (see below), whose sum is σ = 284016445512. Its totient is φ = 142008222752.

The previous prime is 213012334081. The next prime is 213012334201. The reversal of 213012334131 is 131433210312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213012334131 is a prime.

It is a super-2 number, since 2×213012334131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213012334231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35502055686 + ... + 35502055691.

It is an arithmetic number, because the mean of its divisors is an integer number (71004111378).

Almost surely, 2^213012334131 is an apocalyptic number.

213012334131 is a deficient number, since it is larger than the sum of its proper divisors (71004111381).

213012334131 is an equidigital number, since it uses as much as digits as its factorization.

213012334131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71004111380.

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

Adding to 213012334131 its reverse (131433210312), we get a palindrome (344445544443).

The spelling of 213012334131 in words is "two hundred thirteen billion, twelve million, three hundred thirty-four thousand, one hundred thirty-one".