21231013130131 has 32 divisors (see below), whose sum is σ = 26262262287360. Its totient is φ = 16761499945344.

The previous prime is 21231013130101. The next prime is 21231013130141. The reversal of 21231013130131 is 13103131013212.

It is not a de Polignac number, because 21231013130131 - 2⁹ = 21231013129619 is a prime.

It is a super-2 number, since 2×21231013130131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21231013130101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4353945 + ... + 7837018.

It is an arithmetic number, because the mean of its divisors is an integer number (820695696480).

Almost surely, 2^{21231013130131} is an apocalyptic number.

21231013130131 is a deficient number, since it is larger than the sum of its proper divisors (5031249157229).

21231013130131 is a wasteful number, since it uses less digits than its factorization.

21231013130131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12191395.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 21231013130131 its reverse (13103131013212), we get a palindrome (34334144143343).

The spelling of 21231013130131 in words is "twenty-one trillion, two hundred thirty-one billion, thirteen million, one hundred thirty thousand, one hundred thirty-one".