231011040 has 96 divisors (see below), whose sum is σ = 783681696. Its totient is φ = 56862720.

The previous prime is 231011023. The next prime is 231011069. The reversal of 231011040 is 40110132.

It is a happy number.

231011040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×231011040² = 106732201203763200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12271 + ... + 24750.

It is an arithmetic number, because the mean of its divisors is an integer number (8163351).

Almost surely, 2^231011040 is an apocalyptic number.

231011040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231011040 is an abundant number, since it is smaller than the sum of its proper divisors (552670656).

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

231011040 is a wasteful number, since it uses less digits than its factorization.

231011040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37052 (or 37044 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 231011040 is about 15199.0473385670. The cubic root of 231011040 is about 613.5890185794.

Adding to 231011040 its reverse (40110132), we get a palindrome (271121172).

The spelling of 231011040 in words is "two hundred thirty-one million, eleven thousand, forty".