123311312021002 has 64 divisors (see below), whose sum is σ = 223541474623488. Its totient is φ = 49893452784000.

The previous prime is 123311312020957. The next prime is 123311312021011. The reversal of 123311312021002 is 200120213113321.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 464486433 + ... + 464751835.

It is an arithmetic number, because the mean of its divisors is an integer number (3492835540992).

Almost surely, 2^{123311312021002} is an apocalyptic number.

123311312021002 is a deficient number, since it is larger than the sum of its proper divisors (100230162602486).

123311312021002 is a wasteful number, since it uses less digits than its factorization.

123311312021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291595.

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

Adding to 123311312021002 its reverse (200120213113321), we get a palindrome (323431525134323).

The spelling of 123311312021002 in words is "one hundred twenty-three trillion, three hundred eleven billion, three hundred twelve million, twenty-one thousand, two".