231222054 has 16 divisors (see below), whose sum is σ = 528507648. Its totient is φ = 66063432.

The previous prime is 231222053. The next prime is 231222067. The reversal of 231222054 is 450222132.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 231222054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231222053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2752602 + ... + 2752685.

It is an arithmetic number, because the mean of its divisors is an integer number (33031728).

Almost surely, 2^231222054 is an apocalyptic number.

231222054 is an abundant number, since it is smaller than the sum of its proper divisors (297285594).

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

231222054 is a wasteful number, since it uses less digits than its factorization.

231222054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505299.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 231222054 is about 15205.9874391636. The cubic root of 231222054 is about 613.7757866670.

Adding to 231222054 its reverse (450222132), we get a palindrome (681444186).

The spelling of 231222054 in words is "two hundred thirty-one million, two hundred twenty-two thousand, fifty-four".