136631252 has 6 divisors (see below), whose sum is σ = 239104698. Its totient is φ = 68315624.

The previous prime is 136631239. The next prime is 136631273. The reversal of 136631252 is 252136631.

136631252 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 85451536 + 51179716 = 9244^2 + 7154^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17078903 + ... + 17078910.

It is an arithmetic number, because the mean of its divisors is an integer number (39850783).

Almost surely, 2^136631252 is an apocalyptic number.

It is an amenable number.

136631252 is a deficient number, since it is larger than the sum of its proper divisors (102473446).

136631252 is a wasteful number, since it uses less digits than its factorization.

136631252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34157817 (or 34157815 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 136631252 is about 11688.9371629759. The cubic root of 136631252 is about 515.0507405940.

Adding to 136631252 its reverse (252136631), we get a palindrome (388767883).

The spelling of 136631252 in words is "one hundred thirty-six million, six hundred thirty-one thousand, two hundred fifty-two".