136704431 has 2 divisors, whose sum is σ = 136704432. Its totient is φ = 136704430.

The previous prime is 136704401. The next prime is 136704457. The reversal of 136704431 is 134407631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136704431 - 2⁶ = 136704367 is a prime.

It is a super-2 number, since 2×136704431² = 37376202910067522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 136704394 and 136704403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136704401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68352215 + 68352216.

It is an arithmetic number, because the mean of its divisors is an integer number (68352216).

Almost surely, 2^136704431 is an apocalyptic number.

136704431 is a deficient number, since it is larger than the sum of its proper divisors (1).

136704431 is an equidigital number, since it uses as much as digits as its factorization.

136704431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 136704431 is about 11692.0670114399. The cubic root of 136704431 is about 515.1426770301.

The spelling of 136704431 in words is "one hundred thirty-six million, seven hundred four thousand, four hundred thirty-one".