232231021 has 8 divisors (see below), whose sum is σ = 257637600. Its totient is φ = 207540240.

The previous prime is 232231019. The next prime is 232231037. The reversal of 232231021 is 120132232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 232231021 - 2¹ = 232231019 is a prime.

It is a super-2 number, since 2×232231021² = 107862494229404882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 232230986 and 232231004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232231921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178266 + ... + 179563.

It is an arithmetic number, because the mean of its divisors is an integer number (32204700).

Almost surely, 2^232231021 is an apocalyptic number.

It is an amenable number.

232231021 is a deficient number, since it is larger than the sum of its proper divisors (25406579).

232231021 is a wasteful number, since it uses less digits than its factorization.

232231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357899.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 232231021 is about 15239.1279606151. The cubic root of 232231021 is about 614.6672542878.

Adding to 232231021 its reverse (120132232), we get a palindrome (352363253).

The spelling of 232231021 in words is "two hundred thirty-two million, two hundred thirty-one thousand, twenty-one".