136451131 has 4 divisors (see below), whose sum is σ = 136475064. Its totient is φ = 136427200.

The previous prime is 136451123. The next prime is 136451143. The reversal of 136451131 is 131154631.

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

It is a cyclic number.

It is not a de Polignac number, because 136451131 - 2³ = 136451123 is a prime.

It is a super-2 number, since 2×136451131² = 37237822302358322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136451096 and 136451105.

It is not an unprimeable number, because it can be changed into a prime (136451831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2091 + ... + 16651.

It is an arithmetic number, because the mean of its divisors is an integer number (34118766).

Almost surely, 2^136451131 is an apocalyptic number.

136451131 is a deficient number, since it is larger than the sum of its proper divisors (23933).

136451131 is an equidigital number, since it uses as much as digits as its factorization.

136451131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23932.

The product of its digits is 1080, while the sum is 25.

The square root of 136451131 is about 11681.2298581956. The cubic root of 136451131 is about 514.8243105744.

The spelling of 136451131 in words is "one hundred thirty-six million, four hundred fifty-one thousand, one hundred thirty-one".