2131756422 has 16 divisors (see below), whose sum is σ = 4269603312. Its totient is φ = 709570400.

The previous prime is 2131756411. The next prime is 2131756427. The reversal of 2131756422 is 2246571312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131756427) 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, 249213 + ... + 257624.

It is an arithmetic number, because the mean of its divisors is an integer number (266850207).

Almost surely, 2^2131756422 is an apocalyptic number.

2131756422 is an abundant number, since it is smaller than the sum of its proper divisors (2137846890).

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

2131756422 is a wasteful number, since it uses less digits than its factorization.

2131756422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507543.

The product of its digits is 20160, while the sum is 33.

The square root of 2131756422 is about 46170.9478135331. The cubic root of 2131756422 is about 1287.0019156331.

The spelling of 2131756422 in words is "two billion, one hundred thirty-one million, seven hundred fifty-six thousand, four hundred twenty-two".