31121213123002 has 32 divisors (see below), whose sum is σ = 49098765164544. Its totient is φ = 14773960656000.

The previous prime is 31121213122981. The next prime is 31121213123047. The reversal of 31121213123002 is 20032131212113.

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, 92994358 + ... + 93328414.

It is an arithmetic number, because the mean of its divisors is an integer number (1534336411392).

Almost surely, 2^{31121213123002} is an apocalyptic number.

31121213123002 is a deficient number, since it is larger than the sum of its proper divisors (17977552041542).

31121213123002 is a wasteful number, since it uses less digits than its factorization.

31121213123002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362494.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31121213123002 its reverse (20032131212113), we get a palindrome (51153344335115).

The spelling of 31121213123002 in words is "thirty-one trillion, one hundred twenty-one billion, two hundred thirteen million, one hundred twenty-three thousand, two".