31400111212 has 6 divisors (see below), whose sum is σ = 54950194628. Its totient is φ = 15700055604.

The previous prime is 31400111179. The next prime is 31400111213. The reversal of 31400111212 is 21211100413.

It is not an unprimeable number, because it can be changed into a prime (31400111213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3925013898 + ... + 3925013905.

Almost surely, 2^31400111212 is an apocalyptic number.

It is an amenable number.

31400111212 is a deficient number, since it is larger than the sum of its proper divisors (23550083416).

31400111212 is a wasteful number, since it uses less digits than its factorization.

31400111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7850027807 (or 7850027805 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 31400111212 its reverse (21211100413), we get a palindrome (52611211625).

The spelling of 31400111212 in words is "thirty-one billion, four hundred million, one hundred eleven thousand, two hundred twelve".