136477931 has 4 divisors (see below), whose sum is σ = 143661000. Its totient is φ = 129294864.

The previous prime is 136477879. The next prime is 136477961. The reversal of 136477931 is 139774631.

136477931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136477931 is a prime.

It is a super-2 number, since 2×136477931² = 37252451300081522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136477961) 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, 3591506 + ... + 3591543.

It is an arithmetic number, because the mean of its divisors is an integer number (35915250).

Almost surely, 2^136477931 is an apocalyptic number.

136477931 is a deficient number, since it is larger than the sum of its proper divisors (7183069).

136477931 is an equidigital number, since it uses as much as digits as its factorization.

136477931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7183068.

The product of its digits is 95256, while the sum is 41.

The square root of 136477931 is about 11682.3769413592. The cubic root of 136477931 is about 514.8580134545.

The spelling of 136477931 in words is "one hundred thirty-six million, four hundred seventy-seven thousand, nine hundred thirty-one".