213131210012 has 48 divisors (see below), whose sum is σ = 441829506048. Its totient is φ = 88064159040.

The previous prime is 213131210011. The next prime is 213131210021. The reversal of 213131210012 is 210012131312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213131210011) 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, 1120439 + ... + 1296782.

It is an arithmetic number, because the mean of its divisors is an integer number (9204781376).

Almost surely, 2^213131210012 is an apocalyptic number.

It is an amenable number.

213131210012 is an abundant number, since it is smaller than the sum of its proper divisors (228698296036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213131210012 is a wasteful number, since it uses less digits than its factorization.

213131210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417346 (or 2417344 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 213131210012 its reverse (210012131312), we get a palindrome (423143341324).

The spelling of 213131210012 in words is "two hundred thirteen billion, one hundred thirty-one million, two hundred ten thousand, twelve".