31400402412 has 24 divisors (see below), whose sum is σ = 73302737200. Its totient is φ = 10461782016.

The previous prime is 31400402359. The next prime is 31400402477. The reversal of 31400402412 is 21420400413.

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, 601237 + ... + 651372.

Almost surely, 2^31400402412 is an apocalyptic number.

It is an amenable number.

31400402412 is an abundant number, since it is smaller than the sum of its proper divisors (41902334788).

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

31400402412 is a wasteful number, since it uses less digits than its factorization.

31400402412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254705 (or 1254703 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 31400402412 its reverse (21420400413), we get a palindrome (52820802825).

The spelling of 31400402412 in words is "thirty-one billion, four hundred million, four hundred two thousand, four hundred twelve".