136631156 has 6 divisors (see below), whose sum is σ = 239104530. Its totient is φ = 68315576.

The previous prime is 136631153. The next prime is 136631161. The reversal of 136631156 is 651136631.

It can be written as a sum of positive squares in only one way, i.e., 127328656 + 9302500 = 11284^2 + 3050^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136631153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17078891 + ... + 17078898.

It is an arithmetic number, because the mean of its divisors is an integer number (39850755).

Almost surely, 2^136631156 is an apocalyptic number.

It is an amenable number.

136631156 is a deficient number, since it is larger than the sum of its proper divisors (102473374).

136631156 is a wasteful number, since it uses less digits than its factorization.

136631156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34157793 (or 34157791 counting only the distinct ones).

The product of its digits is 9720, while the sum is 32.

The square root of 136631156 is about 11688.9330565283. The cubic root of 136631156 is about 515.0506199654.

Adding to 136631156 its reverse (651136631), we get a palindrome (787767787).

The spelling of 136631156 in words is "one hundred thirty-six million, six hundred thirty-one thousand, one hundred fifty-six".