31023121002 has 8 divisors (see below), whose sum is σ = 62046242016. Its totient is φ = 10341040332.

The previous prime is 31023120991. The next prime is 31023121021. The reversal of 31023121002 is 20012132013.

It is a sphenic number, since it is the product of 3 distinct primes.

31023121002 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2585260078 + ... + 2585260089.

It is an arithmetic number, because the mean of its divisors is an integer number (7755780252).

Almost surely, 2^31023121002 is an apocalyptic number.

31023121002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31023121002 is a wasteful number, since it uses less digits than its factorization.

31023121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170520172.

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

Adding to 31023121002 its reverse (20012132013), we get a palindrome (51035253015).

The spelling of 31023121002 in words is "thirty-one billion, twenty-three million, one hundred twenty-one thousand, two".