656131422 has 32 divisors (see below), whose sum is σ = 1391904000. Its totient is φ = 205482368.

The previous prime is 656131393. The next prime is 656131429. The reversal of 656131422 is 224131656.

It is a self number, because there is not a number n which added to its sum of digits gives 656131422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656131429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55729 + ... + 66467.

It is an arithmetic number, because the mean of its divisors is an integer number (43497000).

Almost surely, 2^656131422 is an apocalyptic number.

656131422 is an abundant number, since it is smaller than the sum of its proper divisors (735772578).

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

656131422 is a wasteful number, since it uses less digits than its factorization.

656131422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11360.

The product of its digits is 8640, while the sum is 30.

The square root of 656131422 is about 25615.0624047649. The cubic root of 656131422 is about 868.9543177149.

The spelling of 656131422 in words is "six hundred fifty-six million, one hundred thirty-one thousand, four hundred twenty-two".