231041040 has 40 divisors (see below), whose sum is σ = 716227968. Its totient is φ = 61610880.

The previous prime is 231040973. The next prime is 231041059. The reversal of 231041040 is 40140132.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481096 + ... + 481575.

Almost surely, 2^231041040 is an apocalyptic number.

231041040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231041040 is an abundant number, since it is smaller than the sum of its proper divisors (485186928).

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

231041040 is a wasteful number, since it uses less digits than its factorization.

231041040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962687 (or 962681 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 231041040 is about 15200.0342104878. The cubic root of 231041040 is about 613.6155784555.

Adding to 231041040 its reverse (40140132), we get a palindrome (271181172).

The spelling of 231041040 in words is "two hundred thirty-one million, forty-one thousand, forty".