231201123000 has 128 divisors (see below), whose sum is σ = 740843737920. Its totient is φ = 59987289600.

The previous prime is 231201122987. The next prime is 231201123061. The reversal of 231201123000 is 321102132.

231201123000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231201123000² (a number of 24 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 (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 930447 + ... + 1152446.

Almost surely, 2^231201123000 is an apocalyptic number.

231201123000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231201123000 is an abundant number, since it is smaller than the sum of its proper divisors (509642614920).

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

231201123000 is a wasteful number, since it uses less digits than its factorization.

231201123000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082954 (or 2082940 counting only the distinct ones).

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

Adding to 231201123000 its reverse (321102132), we get a palindrome (231522225132).

The spelling of 231201123000 in words is "two hundred thirty-one billion, two hundred one million, one hundred twenty-three thousand".