231770040 has 64 divisors (see below), whose sum is σ = 697973760. Its totient is φ = 61568640.

The previous prime is 231770029. The next prime is 231770093. The reversal of 231770040 is 40077132.

231770040 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 (24).

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, 28957 + ... + 36083.

It is an arithmetic number, because the mean of its divisors is an integer number (10905840).

Almost surely, 2^231770040 is an apocalyptic number.

231770040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231770040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348986880).

231770040 is an abundant number, since it is smaller than the sum of its proper divisors (466203720).

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

231770040 is a wasteful number, since it uses less digits than its factorization.

231770040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7412 (or 7408 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 231770040 is about 15223.9955333677. The cubic root of 231770040 is about 614.2602779135.

The spelling of 231770040 in words is "two hundred thirty-one million, seven hundred seventy thousand, forty".