31231034212 has 24 divisors (see below), whose sum is σ = 62604375680. Its totient is φ = 13354234560.

The previous prime is 31231034209. The next prime is 31231034221. The reversal of 31231034212 is 21243013213.

It is a super-2 number, since 2×31231034212² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1258089 + ... + 1282672.

Almost surely, 2^31231034212 is an apocalyptic number.

It is an amenable number.

31231034212 is an abundant number, since it is smaller than the sum of its proper divisors (31373341468).

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

31231034212 is a wasteful number, since it uses less digits than its factorization.

31231034212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541211 (or 2541209 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31231034212 its reverse (21243013213), we get a palindrome (52474047425).

The spelling of 31231034212 in words is "thirty-one billion, two hundred thirty-one million, thirty-four thousand, two hundred twelve".