232121144 has 16 divisors (see below), whose sum is σ = 435407400. Its totient is φ = 116012512.

The previous prime is 232121137. The next prime is 232121147. The reversal of 232121144 is 441121232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232121147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22442 + ... + 31110.

Almost surely, 2^232121144 is an apocalyptic number.

It is an amenable number.

232121144 is a deficient number, since it is larger than the sum of its proper divisors (203286256).

232121144 is a wasteful number, since it uses less digits than its factorization.

232121144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12022 (or 12018 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 232121144 is about 15235.5224393521. The cubic root of 232121144 is about 614.5702984663.

Adding to 232121144 its reverse (441121232), we get a palindrome (673242376).

The spelling of 232121144 in words is "two hundred thirty-two million, one hundred twenty-one thousand, one hundred forty-four".