31020002131002 has 32 divisors (see below), whose sum is σ = 65730293672832. Its totient is φ = 9725709464064.

The previous prime is 31020002130973. The next prime is 31020002131031. The reversal of 31020002131002 is 20013120002013.

It is an interprime number because it is at equal distance from previous prime (31020002130973) and next prime (31020002131031).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94458883 + ... + 94786710.

It is an arithmetic number, because the mean of its divisors is an integer number (2054071677276).

Almost surely, 2^{31020002131002} is an apocalyptic number.

31020002131002 is an abundant number, since it is smaller than the sum of its proper divisors (34710291541830).

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

31020002131002 is a wasteful number, since it uses less digits than its factorization.

31020002131002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189247222.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31020002131002 its reverse (20013120002013), we get a palindrome (51033122133015).

The spelling of 31020002131002 in words is "thirty-one trillion, twenty billion, two million, one hundred thirty-one thousand, two".