232521397 has 8 divisors (see below), whose sum is σ = 233739360. Its totient is φ = 231307440.

The previous prime is 232521389. The next prime is 232521403. The reversal of 232521397 is 793125232.

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 232521397 - 2³ = 232521389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232521347) 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, 216979 + ... + 218047.

It is an arithmetic number, because the mean of its divisors is an integer number (29217420).

Almost surely, 2^232521397 is an apocalyptic number.

It is an amenable number.

232521397 is a deficient number, since it is larger than the sum of its proper divisors (1217963).

232521397 is a wasteful number, since it uses less digits than its factorization.

232521397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003.

The product of its digits is 22680, while the sum is 34.

The square root of 232521397 is about 15248.6523011052. The cubic root of 232521397 is about 614.9233358950.

It can be divided in two parts, 23252 and 1397, that added together give a square (24649 = 157²).

The spelling of 232521397 in words is "two hundred thirty-two million, five hundred twenty-one thousand, three hundred ninety-seven".