232091021 has 8 divisors (see below), whose sum is σ = 245877120. Its totient is φ = 218319808.

The previous prime is 232091011. The next prime is 232091053. The reversal of 232091021 is 120190232.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232091021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 232090984 and 232091002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232091011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54860 + ... + 58938.

It is an arithmetic number, because the mean of its divisors is an integer number (30734640).

Almost surely, 2^232091021 is an apocalyptic number.

It is an amenable number.

232091021 is a deficient number, since it is larger than the sum of its proper divisors (13786099).

232091021 is a wasteful number, since it uses less digits than its factorization.

232091021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7443.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 232091021 is about 15234.5338294285. The cubic root of 232091021 is about 614.5437124896.

The spelling of 232091021 in words is "two hundred thirty-two million, ninety-one thousand, twenty-one".