231101040 has 40 divisors (see below), whose sum is σ = 716413968. Its totient is φ = 61626880.

The previous prime is 231101027. The next prime is 231101069. The reversal of 231101040 is 40101132.

It is a happy number.

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 (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481221 + ... + 481700.

Almost surely, 2^231101040 is an apocalyptic number.

231101040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231101040 is an abundant number, since it is smaller than the sum of its proper divisors (485312928).

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

231101040 is a wasteful number, since it uses less digits than its factorization.

231101040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962937 (or 962931 counting only the distinct ones).

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

The square root of 231101040 is about 15202.0077621346. The cubic root of 231101040 is about 613.6686913110.

Adding to 231101040 its reverse (40101132), we get a palindrome (271202172).

The spelling of 231101040 in words is "two hundred thirty-one million, one hundred one thousand, forty".