31292168082 has 64 divisors (see below), whose sum is σ = 73228955904. Its totient is φ = 8729763840.

The previous prime is 31292168057. The next prime is 31292168111. The reversal of 31292168082 is 28086129213.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 306418 + ... + 395570.

It is an arithmetic number, because the mean of its divisors is an integer number (1144202436).

Almost surely, 2^31292168082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31292168082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36614477952).

31292168082 is an abundant number, since it is smaller than the sum of its proper divisors (41936787822).

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

31292168082 is a wasteful number, since it uses less digits than its factorization.

31292168082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89363.

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 31292168082 in words is "thirty-one billion, two hundred ninety-two million, one hundred sixty-eight thousand, eighty-two".