20623365131 has 8 divisors (see below), whose sum is σ = 20754031584. Its totient is φ = 20493095040.

The previous prime is 20623365097. The next prime is 20623365151. The reversal of 20623365131 is 13156332602.

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 20623365131 - 2¹⁴ = 20623348747 is a prime.

It is a super-2 number, since 2×20623365131² (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 (20623365151) 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, 5651 + ... + 203171.

It is an arithmetic number, because the mean of its divisors is an integer number (2594253948).

Almost surely, 2^20623365131 is an apocalyptic number.

20623365131 is a deficient number, since it is larger than the sum of its proper divisors (130666453).

20623365131 is a wasteful number, since it uses less digits than its factorization.

20623365131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198181.

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 20623365131 its reverse (13156332602), we get a palindrome (33779697733).

The spelling of 20623365131 in words is "twenty billion, six hundred twenty-three million, three hundred sixty-five thousand, one hundred thirty-one".