21130130313 has 16 divisors (see below), whose sum is σ = 31372413760. Its totient is φ = 14055920928.

The previous prime is 21130130309. The next prime is 21130130321. The reversal of 21130130313 is 31303103112.

It is a happy number.

21130130313 is a `hidden beast` number, since 21 + 1 + 301 + 30 + 313 = 666.

It is not a de Polignac number, because 21130130313 - 2² = 21130130309 is a prime.

It is a super-2 number, since 2×21130130313² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21130130303) 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, 843895 + ... + 868572.

It is an arithmetic number, because the mean of its divisors is an integer number (1960775860).

Almost surely, 2^21130130313 is an apocalyptic number.

It is an amenable number.

21130130313 is a deficient number, since it is larger than the sum of its proper divisors (10242283447).

21130130313 is a wasteful number, since it uses less digits than its factorization.

21130130313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712933 (or 1712927 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21130130313 its reverse (31303103112), we get a palindrome (52433233425).

The spelling of 21130130313 in words is "twenty-one billion, one hundred thirty million, one hundred thirty thousand, three hundred thirteen".