231060440 has 32 divisors (see below), whose sum is σ = 559878480. Its totient is φ = 85314432.

The previous prime is 231060433. The next prime is 231060451. The reversal of 231060440 is 44060132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221654 + ... + 222693.

Almost surely, 2^231060440 is an apocalyptic number.

231060440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231060440 is an abundant number, since it is smaller than the sum of its proper divisors (328818040).

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

231060440 is a wasteful number, since it uses less digits than its factorization.

231060440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444371 (or 444367 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 231060440 is about 15200.6723535507. The cubic root of 231060440 is about 613.6327526179.

The spelling of 231060440 in words is "two hundred thirty-one million, sixty thousand, four hundred forty".