20313132013261 has 8 divisors (see below), whose sum is σ = 20675244411648. Its totient is φ = 19953131058000.

The previous prime is 20313132013193. The next prime is 20313132013289. The reversal of 20313132013261 is 16231023131302.

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 20313132013261 - 2¹⁹ = 20313131488973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313132313261) 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, 527841370 + ... + 527879851.

It is an arithmetic number, because the mean of its divisors is an integer number (2584405551456).

Almost surely, 2^{20313132013261} is an apocalyptic number.

It is an amenable number.

20313132013261 is a deficient number, since it is larger than the sum of its proper divisors (362112398387).

20313132013261 is a wasteful number, since it uses less digits than its factorization.

20313132013261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055721563.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 20313132013261 its reverse (16231023131302), we get a palindrome (36544155144563).

The spelling of 20313132013261 in words is "twenty trillion, three hundred thirteen billion, one hundred thirty-two million, thirteen thousand, two hundred sixty-one".