231441408 has 176 divisors, whose sum is σ = 748710720. Its totient is φ = 70041600.

The previous prime is 231441391. The next prime is 231441409. The reversal of 231441408 is 804144132.

It is a tau number, because it is divible by the number of its divisors (176).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (231441409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303748 + ... + 304508.

Almost surely, 2^231441408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231441408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374355360).

231441408 is an abundant number, since it is smaller than the sum of its proper divisors (517269312).

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

231441408 is a wasteful number, since it uses less digits than its factorization.

231441408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 231441408 is about 15213.1984802671. The cubic root of 231441408 is about 613.9698160563.

The spelling of 231441408 in words is "two hundred thirty-one million, four hundred forty-one thousand, four hundred eight".