136774531 has 2 divisors, whose sum is σ = 136774532. Its totient is φ = 136774530.

The previous prime is 136774523. The next prime is 136774543. The reversal of 136774531 is 135477631.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 136774531 - 2³ = 136774523 is a prime.

It is a super-2 number, since 2×136774531² = 37414544660539922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136774591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68387265 + 68387266.

It is an arithmetic number, because the mean of its divisors is an integer number (68387266).

Almost surely, 2^136774531 is an apocalyptic number.

136774531 is a deficient number, since it is larger than the sum of its proper divisors (1).

136774531 is an equidigital number, since it uses as much as digits as its factorization.

136774531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 37.

The square root of 136774531 is about 11695.0643863127. The cubic root of 136774531 is about 515.2307144860.

The spelling of 136774531 in words is "one hundred thirty-six million, seven hundred seventy-four thousand, five hundred thirty-one".