232321140 has 36 divisors (see below), whose sum is σ = 704708004. Its totient is φ = 61952256.

The previous prime is 232321139. The next prime is 232321147. The reversal of 232321140 is 41123232.

It can be written as a sum of positive squares in 2 ways, for example, as 123076836 + 109244304 = 11094^2 + 10452^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×232321140² = 107946224181799200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232321147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 645157 + ... + 645516.

Almost surely, 2^232321140 is an apocalyptic number.

232321140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

232321140 is an abundant number, since it is smaller than the sum of its proper divisors (472386864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

232321140 is a wasteful number, since it uses less digits than its factorization.

232321140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290688 (or 1290683 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 232321140 is about 15242.0845031118. The cubic root of 232321140 is about 614.7467527607.

Adding to 232321140 its reverse (41123232), we get a palindrome (273444372).

The spelling of 232321140 in words is "two hundred thirty-two million, three hundred twenty-one thousand, one hundred forty".