231223440031000 has 64 divisors (see below), whose sum is σ = 555686170022880. Its totient is φ = 89989663132800.

The previous prime is 231223440030943. The next prime is 231223440031009. The reversal of 231223440031000 is 130044322132.

It is a super-2 number, since 2×231223440031000² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231223440031009) by changing a digit.

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, 3124604082 + ... + 3124678081.

Almost surely, 2^{231223440031000} is an apocalyptic number.

231223440031000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231223440031000 is an abundant number, since it is smaller than the sum of its proper divisors (324462729991880).

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

231223440031000 is a wasteful number, since it uses less digits than its factorization.

231223440031000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6249282221 (or 6249282207 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 231223440031000 its reverse (130044322132), we get a palindrome (231353484353132).

The spelling of 231223440031000 in words is "two hundred thirty-one trillion, two hundred twenty-three billion, four hundred forty million, thirty-one thousand".