31400542602 has 96 divisors (see below), whose sum is σ = 80059464576. Its totient is φ = 8768995200.

The previous prime is 31400542601. The next prime is 31400542627. The reversal of 31400542602 is 20624500413.

31400542602 is a `hidden beast` number, since 3 + 1 + 4 + 0 + 0 + 54 + 2 + 602 = 666.

It is not an unprimeable number, because it can be changed into a prime (31400542601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1614528 + ... + 1633860.

It is an arithmetic number, because the mean of its divisors is an integer number (833952756).

Almost surely, 2^31400542602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31400542602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40029732288).

31400542602 is an abundant number, since it is smaller than the sum of its proper divisors (48658921974).

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

31400542602 is a wasteful number, since it uses less digits than its factorization.

31400542602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19996 (or 19993 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 31400542602 in words is "thirty-one billion, four hundred million, five hundred forty-two thousand, six hundred two".