136790431 has 2 divisors, whose sum is σ = 136790432. Its totient is φ = 136790430.

The previous prime is 136790417. The next prime is 136790441. The reversal of 136790431 is 134097631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136790431 - 2¹⁷ = 136659359 is a prime.

It is a super-2 number, since 2×136790431² = 37423244026331522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136790441) 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 as a sum of consecutive naturals, namely, 68395215 + 68395216.

It is an arithmetic number, because the mean of its divisors is an integer number (68395216).

Almost surely, 2^136790431 is an apocalyptic number.

136790431 is a deficient number, since it is larger than the sum of its proper divisors (1).

136790431 is an equidigital number, since it uses as much as digits as its factorization.

136790431 is an odious number, because the sum of its binary digits is odd.

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

The square root of 136790431 is about 11695.7441404983. The cubic root of 136790431 is about 515.2506788533.

The spelling of 136790431 in words is "one hundred thirty-six million, seven hundred ninety thousand, four hundred thirty-one".