231023002032 has 30 divisors (see below), whose sum is σ = 646543540812. Its totient is φ = 77007667296.

The previous prime is 231023002031. The next prime is 231023002043. The reversal of 231023002032 is 230200320132.

It is a happy number.

231023002032 is a `hidden beast` number, since 2 + 310 + 2 + 300 + 20 + 32 = 666.

It is a super-2 number, since 2×231023002032² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 231023001996 and 231023002014.

It is not an unprimeable number, because it can be changed into a prime (231023002031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 802163058 + ... + 802163345.

Almost surely, 2^231023002032 is an apocalyptic number.

It is an amenable number.

231023002032 is an abundant number, since it is smaller than the sum of its proper divisors (415520538780).

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

231023002032 is a wasteful number, since it uses less digits than its factorization.

231023002032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604326417 (or 1604326408 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 231023002032 its reverse (230200320132), we get a palindrome (461223322164).

The spelling of 231023002032 in words is "two hundred thirty-one billion, twenty-three million, two thousand, thirty-two".