231492492 has 168 divisors, whose sum is σ = 757999872. Its totient is φ = 60069600.

The previous prime is 231492487. The next prime is 231492497. The reversal of 231492492 is 294294132.

231492492 is a `hidden beast` number, since 23 + 149 + 2 + 492 = 666.

231492492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (231492487) and next prime (231492497).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (231492497) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 224017 + ... + 225047.

It is an arithmetic number, because the mean of its divisors is an integer number (4511904).

Almost surely, 2^231492492 is an apocalyptic number.

231492492 is a gapful number since it is divisible by the number (22) 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 231492492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378999936).

231492492 is an abundant number, since it is smaller than the sum of its proper divisors (526507380).

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

231492492 is a wasteful number, since it uses less digits than its factorization.

231492492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071 (or 1054 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 231492492 is about 15214.8773245137. The cubic root of 231492492 is about 614.0149847623.

The spelling of 231492492 in words is "two hundred thirty-one million, four hundred ninety-two thousand, four hundred ninety-two".