131628222 has 24 divisors (see below), whose sum is σ = 311121720. Its totient is φ = 39887280.

The previous prime is 131628209. The next prime is 131628251. The reversal of 131628222 is 222826131.

131628222 is a `hidden beast` number, since 1 + 31 + 628 + 2 + 2 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 332197 + ... + 332592.

It is an arithmetic number, because the mean of its divisors is an integer number (12963405).

Almost surely, 2^131628222 is an apocalyptic number.

131628222 is an abundant number, since it is smaller than the sum of its proper divisors (179493498).

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

131628222 is a wasteful number, since it uses less digits than its factorization.

131628222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664808 (or 664805 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 131628222 is about 11472.9343238772. The cubic root of 131628222 is about 508.6858670292.

The spelling of 131628222 in words is "one hundred thirty-one million, six hundred twenty-eight thousand, two hundred twenty-two".