31142399982 has 32 divisors (see below), whose sum is σ = 64036869792. Its totient is φ = 10089391104.

The previous prime is 31142399941. The next prime is 31142399983. The reversal of 31142399982 is 28999324113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31142399983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133158 + ... + 282870.

It is an arithmetic number, because the mean of its divisors is an integer number (2001152181).

Almost surely, 2^31142399982 is an apocalyptic number.

31142399982 is an abundant number, since it is smaller than the sum of its proper divisors (32894469810).

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

31142399982 is a wasteful number, since it uses less digits than its factorization.

31142399982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150692.

The product of its digits is 839808, while the sum is 51.

The spelling of 31142399982 in words is "thirty-one billion, one hundred forty-two million, three hundred ninety-nine thousand, nine hundred eighty-two".