31211314212 has 48 divisors (see below), whose sum is σ = 82556250560. Its totient is φ = 9098034048.

The previous prime is 31211314201. The next prime is 31211314261. The reversal of 31211314212 is 21241311213.

It is a super-2 number, since 2×31211314212² (a number of 22 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 5262103 + ... + 5268030.

Almost surely, 2^31211314212 is an apocalyptic number.

It is an amenable number.

31211314212 is an abundant number, since it is smaller than the sum of its proper divisors (51344936348).

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

31211314212 is a wasteful number, since it uses less digits than its factorization.

31211314212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10530172 (or 10530170 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

Adding to 31211314212 its reverse (21241311213), we get a palindrome (52452625425).

The spelling of 31211314212 in words is "thirty-one billion, two hundred eleven million, three hundred fourteen thousand, two hundred twelve".