31542143982 has 16 divisors (see below), whose sum is σ = 63404515152. Its totient is φ = 10460676800.

The previous prime is 31542143981. The next prime is 31542144037. The reversal of 31542143982 is 28934124513.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31542143981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13341519 + ... + 13343882.

It is an arithmetic number, because the mean of its divisors is an integer number (3962782197).

Almost surely, 2^31542143982 is an apocalyptic number.

31542143982 is an abundant number, since it is smaller than the sum of its proper divisors (31862371170).

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

31542143982 is a wasteful number, since it uses less digits than its factorization.

31542143982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26685603.

The product of its digits is 207360, while the sum is 42.

The spelling of 31542143982 in words is "thirty-one billion, five hundred forty-two million, one hundred forty-three thousand, nine hundred eighty-two".