136431790 has 32 divisors (see below), whose sum is σ = 268500096. Its totient is φ = 49500960.

The previous prime is 136431739. The next prime is 136431797. The reversal of 136431790 is 97134631.

It is a super-2 number, since 2×136431790² = 37227266645208200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136431797) 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 15 ways as a sum of consecutive naturals, for example, 60829 + ... + 63031.

It is an arithmetic number, because the mean of its divisors is an integer number (8390628).

Almost surely, 2^136431790 is an apocalyptic number.

136431790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136431790 is a deficient number, since it is larger than the sum of its proper divisors (132068306).

136431790 is a wasteful number, since it uses less digits than its factorization.

136431790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 136431790 is about 11680.4019622614. The cubic root of 136431790 is about 514.7999851684.

The spelling of 136431790 in words is "one hundred thirty-six million, four hundred thirty-one thousand, seven hundred ninety".