131422818 has 32 divisors (see below), whose sum is σ = 278816256. Its totient is φ = 41155328.

The previous prime is 131422817. The next prime is 131422877. The reversal of 131422818 is 818224131.

131422818 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×131422818² = 34543914182122248, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131422813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87280 + ... + 88772.

It is an arithmetic number, because the mean of its divisors is an integer number (8713008).

Almost surely, 2^131422818 is an apocalyptic number.

131422818 is an abundant number, since it is smaller than the sum of its proper divisors (147393438).

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

131422818 is a wasteful number, since it uses less digits than its factorization.

131422818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378.

The product of its digits is 3072, while the sum is 30.

The square root of 131422818 is about 11463.9791521094. The cubic root of 131422818 is about 508.4211302144.

Adding to 131422818 its reverse (818224131), we get a palindrome (949646949).

The spelling of 131422818 in words is "one hundred thirty-one million, four hundred twenty-two thousand, eight hundred eighteen".