136425431 has 4 divisors (see below), whose sum is σ = 136449072. Its totient is φ = 136401792.

The previous prime is 136425407. The next prime is 136425449. The reversal of 136425431 is 134524631.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136425431 is a prime.

It is a super-2 number, since 2×136425431² = 37223796447071522, 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 = 136425394 and 136425403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136425131) 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, 3191 + ... + 16823.

It is an arithmetic number, because the mean of its divisors is an integer number (34112268).

Almost surely, 2^136425431 is an apocalyptic number.

136425431 is a deficient number, since it is larger than the sum of its proper divisors (23641).

136425431 is a wasteful number, since it uses less digits than its factorization.

136425431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23640.

The product of its digits is 8640, while the sum is 29.

The square root of 136425431 is about 11680.1297509916. The cubic root of 136425431 is about 514.7919868762.

The spelling of 136425431 in words is "one hundred thirty-six million, four hundred twenty-five thousand, four hundred thirty-one".