123113031000 has 128 divisors (see below), whose sum is σ = 406707687360. Its totient is φ = 30898944000.

The previous prime is 123113030993. The next prime is 123113031043. The reversal of 123113031000 is 130311321.

It is a super-2 number, since 2×123113031000² (a number of 23 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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1155991 + ... + 1257990.

Almost surely, 2^123113031000 is an apocalyptic number.

123113031000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123113031000 is an abundant number, since it is smaller than the sum of its proper divisors (283594656360).

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

123113031000 is a wasteful number, since it uses less digits than its factorization.

123113031000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414022 (or 2414008 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 123113031000 its reverse (130311321), we get a palindrome (123243342321).

The spelling of 123113031000 in words is "one hundred twenty-three billion, one hundred thirteen million, thirty-one thousand".