31400218048 has 28 divisors (see below), whose sum is σ = 62926749432. Its totient is φ = 15544659200.

The previous prime is 31400218021. The next prime is 31400218049. The reversal of 31400218048 is 84081200413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400218049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2422390 + ... + 2435317.

Almost surely, 2^31400218048 is an apocalyptic number.

It is an amenable number.

31400218048 is an abundant number, since it is smaller than the sum of its proper divisors (31526531384).

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

31400218048 is a wasteful number, since it uses less digits than its factorization.

31400218048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4857820 (or 4857810 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The spelling of 31400218048 in words is "thirty-one billion, four hundred million, two hundred eighteen thousand, forty-eight".