123111002031000 has 64 divisors (see below), whose sum is σ = 384106326346080. Its totient is φ = 32829600540800.

The previous prime is 123111002030963. The next prime is 123111002031097. The reversal of 123111002031000 is 130200111321.

It is a happy number.

It is a super-2 number, since 2×123111002031000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 20518497339 + ... + 20518503338.

Almost surely, 2^{123111002031000} is an apocalyptic number.

123111002031000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123111002031000 is an abundant number, since it is smaller than the sum of its proper divisors (260995324315080).

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

123111002031000 is a wasteful number, since it uses less digits than its factorization.

123111002031000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41037000701 (or 41037000687 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 123111002031000 its reverse (130200111321), we get a palindrome (123241202142321).

The spelling of 123111002031000 in words is "one hundred twenty-three trillion, one hundred eleven billion, two million, thirty-one thousand".