136161631 has 8 divisors (see below), whose sum is σ = 136998000. Its totient is φ = 135328512.

The previous prime is 136161629. The next prime is 136161643.

It is a happy number.

136161631 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136161631 - 2¹ = 136161629 is a prime.

It is a super-2 number, since 2×136161631² = 37079979513160322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136161631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136161661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175761 + ... + 176533.

It is an arithmetic number, because the mean of its divisors is an integer number (17124750).

Almost surely, 2^136161631 is an apocalyptic number.

136161631 is a deficient number, since it is larger than the sum of its proper divisors (836369).

136161631 is an equidigital number, since it uses as much as digits as its factorization.

136161631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625.

The product of its digits is 1944, while the sum is 28.

The square root of 136161631 is about 11668.8316038925. The cubic root of 136161631 is about 514.4599623876.

The spelling of 136161631 in words is "one hundred thirty-six million, one hundred sixty-one thousand, six hundred thirty-one".