130811661 has 12 divisors (see below), whose sum is σ = 195045760. Its totient is φ = 84394440.

The previous prime is 130811657. The next prime is 130811677. The reversal of 130811661 is 166118031.

It is not a de Polignac number, because 130811661 - 2² = 130811657 is a prime.

It is a super-2 number, since 2×130811661² = 34223381307157842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130811621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234151 + ... + 234708.

Almost surely, 2^130811661 is an apocalyptic number.

It is an amenable number.

130811661 is a deficient number, since it is larger than the sum of its proper divisors (64234099).

130811661 is a wasteful number, since it uses less digits than its factorization.

130811661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468896 (or 468893 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 130811661 is about 11437.2925554958. The cubic root of 130811661 is about 507.6317999143.

Adding to 130811661 its reverse (166118031), we get a palindrome (296929692).

The spelling of 130811661 in words is "one hundred thirty million, eight hundred eleven thousand, six hundred sixty-one".