136621163231 has 8 divisors (see below), whose sum is σ = 156490932864. Its totient is φ = 116839508760.

The previous prime is 136621163219. The next prime is 136621163243. The reversal of 136621163231 is 132361126631.

It is an interprime number because it is at equal distance from previous prime (136621163219) and next prime (136621163243).

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 136621163231 - 2¹⁴ = 136621146847 is a prime.

It is a super-2 number, since 2×136621163231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136621163191 and 136621163200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136621163281) 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, 22025465 + ... + 22031666.

It is an arithmetic number, because the mean of its divisors is an integer number (19561366608).

Almost surely, 2^136621163231 is an apocalyptic number.

136621163231 is a deficient number, since it is larger than the sum of its proper divisors (19869769633).

136621163231 is an equidigital number, since it uses as much as digits as its factorization.

136621163231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44057581.

The product of its digits is 23328, while the sum is 35.

Adding to 136621163231 its reverse (132361126631), we get a palindrome (268982289862).

The spelling of 136621163231 in words is "one hundred thirty-six billion, six hundred twenty-one million, one hundred sixty-three thousand, two hundred thirty-one".