136225431 has 12 divisors (see below), whose sum is σ = 198681808. Its totient is φ = 89934624.

The previous prime is 136225409. The next prime is 136225433. The reversal of 136225431 is 134522631.

136225431 is a `hidden beast` number, since 1 + 3 + 6 + 225 + 431 = 666.

It is not a de Polignac number, because 136225431 - 2⁵ = 136225399 is a prime.

It is a super-2 number, since 2×136225431² = 37114736102271522, 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 = 136225395 and 136225404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136225433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72550 + ... + 74403.

Almost surely, 2^136225431 is an apocalyptic number.

136225431 is a deficient number, since it is larger than the sum of its proper divisors (62456377).

136225431 is a wasteful number, since it uses less digits than its factorization.

136225431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147062 (or 147059 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 136225431 is about 11671.5650621500. The cubic root of 136225431 is about 514.5403017613.

The spelling of 136225431 in words is "one hundred thirty-six million, two hundred twenty-five thousand, four hundred thirty-one".