130623761 has 4 divisors (see below), whose sum is σ = 131184612. Its totient is φ = 130062912.

The previous prime is 130623749. The next prime is 130623769. The reversal of 130623761 is 167326031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 167326031 = 659 ⋅253909.

It can be written as a sum of positive squares in 2 ways, for example, as 57093136 + 73530625 = 7556^2 + 8575^2 .

It is a cyclic number.

It is not a de Polignac number, because 130623761 - 2⁶ = 130623697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130623769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280076 + ... + 280541.

It is an arithmetic number, because the mean of its divisors is an integer number (32796153).

Almost surely, 2^130623761 is an apocalyptic number.

It is an amenable number.

130623761 is a deficient number, since it is larger than the sum of its proper divisors (560851).

130623761 is an equidigital number, since it uses as much as digits as its factorization.

130623761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560850.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 130623761 is about 11429.0752469305. The cubic root of 130623761 is about 507.3886265832.

Adding to 130623761 its reverse (167326031), we get a palindrome (297949792).

The spelling of 130623761 in words is "one hundred thirty million, six hundred twenty-three thousand, seven hundred sixty-one".