21130302131 has 8 divisors (see below), whose sum is σ = 21180941424. Its totient is φ = 21079717120.

The previous prime is 21130302091. The next prime is 21130302163. The reversal of 21130302131 is 13120303112.

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

It is a cyclic number.

It is not a de Polignac number, because 21130302131 - 2¹⁰ = 21130301107 is a prime.

It is a super-2 number, since 2×21130302131² (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 (21130304131) 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, 827156 + ... + 852318.

It is an arithmetic number, because the mean of its divisors is an integer number (2647617678).

Almost surely, 2^21130302131 is an apocalyptic number.

21130302131 is a deficient number, since it is larger than the sum of its proper divisors (50639293).

21130302131 is a wasteful number, since it uses less digits than its factorization.

21130302131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27141.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21130302131 its reverse (13120303112), we get a palindrome (34250605243).

The spelling of 21130302131 in words is "twenty-one billion, one hundred thirty million, three hundred two thousand, one hundred thirty-one".