231154040 has 32 divisors (see below), whose sum is σ = 560105280. Its totient is φ = 85348992.

The previous prime is 231154039. The next prime is 231154069. The reversal of 231154040 is 40451132.

231154040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 221744 + ... + 222783.

It is an arithmetic number, because the mean of its divisors is an integer number (17503290).

Almost surely, 2^231154040 is an apocalyptic number.

231154040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231154040 is an abundant number, since it is smaller than the sum of its proper divisors (328951240).

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

231154040 is a wasteful number, since it uses less digits than its factorization.

231154040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444551 (or 444547 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 231154040 is about 15203.7508529968. The cubic root of 231154040 is about 613.7156000204.

The spelling of 231154040 in words is "two hundred thirty-one million, one hundred fifty-four thousand, forty".