136446631 has 2 divisors, whose sum is σ = 136446632. Its totient is φ = 136446630.

The previous prime is 136446623. The next prime is 136446671. The reversal of 136446631 is 136644631.

It is a weak prime.

It is an emirp because it is prime and its reverse (136644631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136446631 - 2³ = 136446623 is a prime.

It is a super-2 number, since 2×136446631² = 37235366222500322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136446671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68223315 + 68223316.

It is an arithmetic number, because the mean of its divisors is an integer number (68223316).

Almost surely, 2^136446631 is an apocalyptic number.

136446631 is a deficient number, since it is larger than the sum of its proper divisors (1).

136446631 is an equidigital number, since it uses as much as digits as its factorization.

136446631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 34.

The square root of 136446631 is about 11681.0372399030. The cubic root of 136446631 is about 514.8186510760.

The spelling of 136446631 in words is "one hundred thirty-six million, four hundred forty-six thousand, six hundred thirty-one".