231000210123000 has 128 divisors (see below), whose sum is σ = 745573092264000. Its totient is φ = 59475916147200.

The previous prime is 231000210122977. The next prime is 231000210123071. The reversal of 231000210123000 is 321012000132.

It is a super-2 number, since 2×231000210123000² (a number of 30 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, 1327500415 + ... + 1327674414.

Almost surely, 2^{231000210123000} is an apocalyptic number.

231000210123000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231000210123000 is an abundant number, since it is smaller than the sum of its proper divisors (514572882141000).

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

231000210123000 is a wasteful number, since it uses less digits than its factorization.

231000210123000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655174882 (or 2655174868 counting only the distinct ones).

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

Adding to 231000210123000 its reverse (321012000132), we get a palindrome (231321222123132).

The spelling of 231000210123000 in words is "two hundred thirty-one trillion, two hundred ten million, one hundred twenty-three thousand".