131278162 has 4 divisors (see below), whose sum is σ = 196917246. Its totient is φ = 65639080.

The previous prime is 131278153. The next prime is 131278207. The reversal of 131278162 is 261872131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 128391561 + 2886601 = 11331^2 + 1699^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32819539 + ... + 32819542.

Almost surely, 2^131278162 is an apocalyptic number.

131278162 is a deficient number, since it is larger than the sum of its proper divisors (65639084).

131278162 is an equidigital number, since it uses as much as digits as its factorization.

131278162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65639083.

The product of its digits is 4032, while the sum is 31.

The square root of 131278162 is about 11457.6682619109. The cubic root of 131278162 is about 508.2345234324.

The spelling of 131278162 in words is "one hundred thirty-one million, two hundred seventy-eight thousand, one hundred sixty-two".