130013138 has 4 divisors (see below), whose sum is σ = 195019710. Its totient is φ = 65006568.

The previous prime is 130013131. The next prime is 130013171. The reversal of 130013138 is 831310031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831310031 = 25163 ⋅33037.

It can be written as a sum of positive squares in only one way, i.e., 122921569 + 7091569 = 11087^2 + 2663^2 .

It is not an unprimeable number, because it can be changed into a prime (130013131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32503283 + ... + 32503286.

Almost surely, 2^130013138 is an apocalyptic number.

130013138 is a deficient number, since it is larger than the sum of its proper divisors (65006572).

130013138 is an equidigital number, since it uses as much as digits as its factorization.

130013138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65006571.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 130013138 is about 11402.3303758486. The cubic root of 130013138 is about 506.5967665766.

Adding to 130013138 its reverse (831310031), we get a palindrome (961323169).

The spelling of 130013138 in words is "one hundred thirty million, thirteen thousand, one hundred thirty-eight".