68422131 has 8 divisors (see below), whose sum is σ = 101366160. Its totient is φ = 45614736.

The previous prime is 68422111. The next prime is 68422187. The reversal of 68422131 is 13122486.

It is a de Polignac number, because none of the positive numbers 2^k-68422131 is a prime.

It is a super-2 number, since 2×68422131² = 9363176021162322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2534153 = 68422131 / (6 + 8 + 4 + 2 + 2 + 1 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 68422095 and 68422104.

It is not an unprimeable number, because it can be changed into a prime (68422111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1267050 + ... + 1267103.

It is an arithmetic number, because the mean of its divisors is an integer number (12670770).

Almost surely, 2^68422131 is an apocalyptic number.

68422131 is a deficient number, since it is larger than the sum of its proper divisors (32944029).

68422131 is a wasteful number, since it uses less digits than its factorization.

68422131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534162 (or 2534156 counting only the distinct ones).

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

The square root of 68422131 is about 8271.7671026208. The cubic root of 68422131 is about 409.0083729652.

The spelling of 68422131 in words is "sixty-eight million, four hundred twenty-two thousand, one hundred thirty-one".