21130323313 has 8 divisors (see below), whose sum is σ = 23343050880. Its totient is φ = 18966227280.

The previous prime is 21130323143. The next prime is 21130323329. The reversal of 21130323313 is 31332303112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-21130323313 is a prime.

It is a super-2 number, since 2×21130323313² (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 (21130323713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12156970 + ... + 12158707.

It is an arithmetic number, because the mean of its divisors is an integer number (2917881360).

Almost surely, 2^21130323313 is an apocalyptic number.

It is an amenable number.

21130323313 is a deficient number, since it is larger than the sum of its proper divisors (2212727567).

21130323313 is a wasteful number, since it uses less digits than its factorization.

21130323313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24315767.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21130323313 its reverse (31332303112), we get a palindrome (52462626425).

It can be divided in two parts, 21130 and 323313, that added together give a palindrome (344443).

The spelling of 21130323313 in words is "twenty-one billion, one hundred thirty million, three hundred twenty-three thousand, three hundred thirteen".