130811566 has 32 divisors (see below), whose sum is σ = 215060832. Its totient is φ = 59427840.

The previous prime is 130811543. The next prime is 130811567. The reversal of 130811566 is 665118031.

It is a super-2 number, since 2×130811566² = 34223331598744712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130811567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148720 + ... + 149596.

It is an arithmetic number, because the mean of its divisors is an integer number (6720651).

Almost surely, 2^130811566 is an apocalyptic number.

130811566 is a deficient number, since it is larger than the sum of its proper divisors (84249266).

130811566 is a wasteful number, since it uses less digits than its factorization.

130811566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 130811566 is about 11437.2884024143. The cubic root of 130811566 is about 507.6316770276.

Adding to 130811566 its reverse (665118031), we get a palindrome (795929597).

The spelling of 130811566 in words is "one hundred thirty million, eight hundred eleven thousand, five hundred sixty-six".