130811344 has 20 divisors (see below), whose sum is σ = 262187460. Its totient is φ = 63150080.

The previous prime is 130811321. The next prime is 130811357. The reversal of 130811344 is 443118031.

It can be written as a sum of positive squares in 2 ways, for example, as 77228944 + 53582400 = 8788^2 + 7320^2 .

It is a super-2 number, since 2×130811344² = 34223215438172672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140497 + ... + 141424.

It is an arithmetic number, because the mean of its divisors is an integer number (13109373).

Almost surely, 2^130811344 is an apocalyptic number.

It is an amenable number.

130811344 is an abundant number, since it is smaller than the sum of its proper divisors (131376116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130811344 is a wasteful number, since it uses less digits than its factorization.

130811344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281958 (or 281952 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 130811344 is about 11437.2786973126. The cubic root of 130811344 is about 507.6313898606.

Adding to 130811344 its reverse (443118031), we get a palindrome (573929375).

The spelling of 130811344 in words is "one hundred thirty million, eight hundred eleven thousand, three hundred forty-four".