136144331 has 2 divisors, whose sum is σ = 136144332. Its totient is φ = 136144330.

The previous prime is 136144303. The next prime is 136144361. The reversal of 136144331 is 133441631.

136144331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136144331 is a prime.

It is a super-2 number, since 2×136144331² = 37070557726875122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136144331.

It is not a weakly prime, because it can be changed into another prime (136144301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68072165 + 68072166.

It is an arithmetic number, because the mean of its divisors is an integer number (68072166).

Almost surely, 2^136144331 is an apocalyptic number.

136144331 is a deficient number, since it is larger than the sum of its proper divisors (1).

136144331 is an equidigital number, since it uses as much as digits as its factorization.

136144331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 26.

The square root of 136144331 is about 11668.0902893318. The cubic root of 136144331 is about 514.4381732481.

Adding to 136144331 its reverse (133441631), we get a palindrome (269585962).

The spelling of 136144331 in words is "one hundred thirty-six million, one hundred forty-four thousand, three hundred thirty-one".