31212032130102 has 128 divisors (see below), whose sum is σ = 67150382400000. Its totient is φ = 9636439228416.

The previous prime is 31212032130079. The next prime is 31212032130107. The reversal of 31212032130102 is 20103123021213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212032130107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7988744433 + ... + 7988748339.

It is an arithmetic number, because the mean of its divisors is an integer number (524612362500).

Almost surely, 2^{31212032130102} is an apocalyptic number.

31212032130102 is an abundant number, since it is smaller than the sum of its proper divisors (35938350269898).

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

31212032130102 is a wasteful number, since it uses less digits than its factorization.

31212032130102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31212032130102 its reverse (20103123021213), we get a palindrome (51315155151315).

The spelling of 31212032130102 in words is "thirty-one trillion, two hundred twelve billion, thirty-two million, one hundred thirty thousand, one hundred two".