232400021331 has 32 divisors (see below), whose sum is σ = 324626319360. Its totient is φ = 147691724544.

The previous prime is 232400021303. The next prime is 232400021369. The reversal of 232400021331 is 133120004232.

It is not a de Polignac number, because 232400021331 - 2⁹ = 232400020819 is a prime.

It is a super-2 number, since 2×232400021331² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 232400021298 and 232400021307.

It is not an unprimeable number, because it can be changed into a prime (232400021431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11955486 + ... + 11974908.

It is an arithmetic number, because the mean of its divisors is an integer number (10144572480).

Almost surely, 2^232400021331 is an apocalyptic number.

232400021331 is a deficient number, since it is larger than the sum of its proper divisors (92226298029).

232400021331 is a wasteful number, since it uses less digits than its factorization.

232400021331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21195.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 232400021331 its reverse (133120004232), we get a palindrome (365520025563).

The spelling of 232400021331 in words is "two hundred thirty-two billion, four hundred million, twenty-one thousand, three hundred thirty-one".