231413994 has 96 divisors (see below), whose sum is σ = 611020800. Its totient is φ = 61861536.

The previous prime is 231413983. The next prime is 231413999. The reversal of 231413994 is 499314132.

231413994 is a `hidden beast` number, since 231 + 413 + 9 + 9 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (231413999) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 135357 + ... + 137055.

It is an arithmetic number, because the mean of its divisors is an integer number (6364800).

Almost surely, 2^231413994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231413994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305510400).

231413994 is an abundant number, since it is smaller than the sum of its proper divisors (379606806).

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

231413994 is a wasteful number, since it uses less digits than its factorization.

231413994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 1781 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 231413994 is about 15212.2974596213. The cubic root of 231413994 is about 613.9455737318.

The spelling of 231413994 in words is "two hundred thirty-one million, four hundred thirteen thousand, nine hundred ninety-four".