31142518302 has 96 divisors (see below), whose sum is σ = 73757779200. Its totient is φ = 8762458320.

The previous prime is 31142518301. The next prime is 31142518327. The reversal of 31142518302 is 20381524113.

It is a self number, because there is not a number n which added to its sum of digits gives 31142518302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31142518301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9236677 + ... + 9240047.

It is an arithmetic number, because the mean of its divisors is an integer number (768310200).

Almost surely, 2^31142518302 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31142518302, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36878889600).

31142518302 is an abundant number, since it is smaller than the sum of its proper divisors (42615260898).

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

31142518302 is an equidigital number, since it uses as much as digits as its factorization.

31142518302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3531 (or 3450 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 31142518302 in words is "thirty-one billion, one hundred forty-two million, five hundred eighteen thousand, three hundred two".