136234253 has 4 divisors (see below), whose sum is σ = 136260768. Its totient is φ = 136207740.

The previous prime is 136234223. The next prime is 136234271. The reversal of 136234253 is 352432631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136234253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136234223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2801 + ... + 16742.

It is an arithmetic number, because the mean of its divisors is an integer number (34065192).

Almost surely, 2^136234253 is an apocalyptic number.

It is an amenable number.

136234253 is a deficient number, since it is larger than the sum of its proper divisors (26515).

136234253 is an equidigital number, since it uses as much as digits as its factorization.

136234253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26514.

The product of its digits is 12960, while the sum is 29.

The square root of 136234253 is about 11671.9429830684. The cubic root of 136234253 is about 514.5514087833.

Adding to 136234253 its reverse (352432631), we get a palindrome (488666884).

The spelling of 136234253 in words is "one hundred thirty-six million, two hundred thirty-four thousand, two hundred fifty-three".