231150400 has 84 divisors (see below), whose sum is σ = 612581452. Its totient is φ = 85340160.

The previous prime is 231150379. The next prime is 231150419. The reversal of 231150400 is 4051132.

It can be written as a sum of positive squares in 6 ways, for example, as 95101504 + 136048896 = 9752^2 + 11664^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15244 + ... + 26356.

Almost surely, 2^231150400 is an apocalyptic number.

231150400 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 231150400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306290726).

231150400 is an abundant number, since it is smaller than the sum of its proper divisors (381431052).

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

231150400 is a wasteful number, since it uses less digits than its factorization.

231150400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11148 (or 11133 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 231150400 is about 15203.6311452232. The cubic root of 231150400 is about 613.7123785950.

The spelling of 231150400 in words is "two hundred thirty-one million, one hundred fifty thousand, four hundred".