136381253 has 2 divisors, whose sum is σ = 136381254. Its totient is φ = 136381252.

The previous prime is 136381249. The next prime is 136381309. The reversal of 136381253 is 352183631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129914404 + 6466849 = 11398^2 + 2543^2 .

It is a cyclic number.

It is not a de Polignac number, because 136381253 - 2² = 136381249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136381213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68190626 + 68190627.

It is an arithmetic number, because the mean of its divisors is an integer number (68190627).

Almost surely, 2^136381253 is an apocalyptic number.

It is an amenable number.

136381253 is a deficient number, since it is larger than the sum of its proper divisors (1).

136381253 is an equidigital number, since it uses as much as digits as its factorization.

136381253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 32.

The square root of 136381253 is about 11678.2384373672. The cubic root of 136381253 is about 514.7364133282.

The spelling of 136381253 in words is "one hundred thirty-six million, three hundred eighty-one thousand, two hundred fifty-three".