31212102122004 has 48 divisors (see below), whose sum is σ = 75995456584320. Its totient is φ = 9951583488000.

The previous prime is 31212102121999. The next prime is 31212102122017. The reversal of 31212102122004 is 40022120121213.

It is a happy number.

It is a congruent number.

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, 29433004 + ... + 30475004.

It is an arithmetic number, because the mean of its divisors is an integer number (1583238678840).

Almost surely, 2^{31212102122004} is an apocalyptic number.

It is an amenable number.

31212102122004 is an abundant number, since it is smaller than the sum of its proper divisors (44783354462316).

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

31212102122004 is a wasteful number, since it uses less digits than its factorization.

31212102122004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150560 (or 1150558 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 31212102122004 its reverse (40022120121213), we get a palindrome (71234222243217).

The spelling of 31212102122004 in words is "thirty-one trillion, two hundred twelve billion, one hundred two million, one hundred twenty-two thousand, four".