31345335212 has 72 divisors (see below), whose sum is σ = 59104760400. Its totient is φ = 14523938688.

The previous prime is 31345335209. The next prime is 31345335277. The reversal of 31345335212 is 21253354313.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12653318 + ... + 12655794.

It is an arithmetic number, because the mean of its divisors is an integer number (820899450).

Almost surely, 2^31345335212 is an apocalyptic number.

It is an amenable number.

31345335212 is a deficient number, since it is larger than the sum of its proper divisors (27759425188).

31345335212 is a wasteful number, since it uses less digits than its factorization.

31345335212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655 (or 2610 counting only the distinct ones).

The product of its digits is 32400, while the sum is 32.

Adding to 31345335212 its reverse (21253354313), we get a palindrome (52598689525).

The spelling of 31345335212 in words is "thirty-one billion, three hundred forty-five million, three hundred thirty-five thousand, two hundred twelve".