231454422 has 80 divisors (see below), whose sum is σ = 553037760. Its totient is φ = 72099072.

The previous prime is 231454411. The next prime is 231454427. The reversal of 231454422 is 224454132.

231454422 is a `hidden beast` number, since 231 + 4 + 5 + 4 + 422 = 666.

It is a super-2 number, since 2×231454422² = 107142298926708168, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231454427) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 630483 + ... + 630849.

It is an arithmetic number, because the mean of its divisors is an integer number (6912972).

Almost surely, 2^231454422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231454422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276518880).

231454422 is an abundant number, since it is smaller than the sum of its proper divisors (321583338).

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

231454422 is a wasteful number, since it uses less digits than its factorization.

231454422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 618 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 231454422 is about 15213.6261949609. The cubic root of 231454422 is about 613.9813237254.

The spelling of 231454422 in words is "two hundred thirty-one million, four hundred fifty-four thousand, four hundred twenty-two".