230531040 has 72 divisors (see below), whose sum is σ = 786692088. Its totient is φ = 61474560.

The previous prime is 230531039. The next prime is 230531087. The reversal of 230531040 is 40135032.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78606 + ... + 81485.

It is an arithmetic number, because the mean of its divisors is an integer number (10926279).

Almost surely, 2^230531040 is an apocalyptic number.

230531040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

230531040 is an abundant number, since it is smaller than the sum of its proper divisors (556161048).

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

230531040 is a wasteful number, since it uses less digits than its factorization.

230531040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160112 (or 160101 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 230531040 is about 15183.2486642352. The cubic root of 230531040 is about 613.1637474850.

Adding to 230531040 its reverse (40135032), we get a palindrome (270666072).

The spelling of 230531040 in words is "two hundred thirty million, five hundred thirty-one thousand, forty".