136860431 has 8 divisors (see below), whose sum is σ = 139621680. Its totient is φ = 134120448.

The previous prime is 136860403. The next prime is 136860433. The reversal of 136860431 is 134068631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136860431 is a prime.

It is a super-2 number, since 2×136860431² = 37461555147011522, 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 (136860433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8015 + ... + 18383.

It is an arithmetic number, because the mean of its divisors is an integer number (17452710).

Almost surely, 2^136860431 is an apocalyptic number.

136860431 is a deficient number, since it is larger than the sum of its proper divisors (2761249).

136860431 is a wasteful number, since it uses less digits than its factorization.

136860431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10633.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 136860431 is about 11698.7362992761. The cubic root of 136860431 is about 515.3385539011.

The spelling of 136860431 in words is "one hundred thirty-six million, eight hundred sixty thousand, four hundred thirty-one".