136700381 has 4 divisors (see below), whose sum is σ = 137698332. Its totient is φ = 135702432.

The previous prime is 136700363. The next prime is 136700407. The reversal of 136700381 is 183007631.

136700381 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, and also an emirpimes, since its reverse is a distinct semiprime: 183007631 = 179 ⋅1022389.

It can be written as a sum of positive squares in 2 ways, for example, as 101404900 + 35295481 = 10070^2 + 5941^2 .

It is a cyclic number.

It is not a de Polignac number, because 136700381 - 2²⁶ = 69591517 is a prime.

It is a super-2 number, since 2×136700381² = 37373988331090322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136700881) 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, 498770 + ... + 499043.

It is an arithmetic number, because the mean of its divisors is an integer number (34424583).

Almost surely, 2^136700381 is an apocalyptic number.

It is an amenable number.

136700381 is a deficient number, since it is larger than the sum of its proper divisors (997951).

136700381 is an equidigital number, since it uses as much as digits as its factorization.

136700381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997950.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 136700381 is about 11691.8938158025. The cubic root of 136700381 is about 515.1375897811.

The spelling of 136700381 in words is "one hundred thirty-six million, seven hundred thousand, three hundred eighty-one".