13123000220131 has 4 divisors (see below), whose sum is σ = 13124071410264. Its totient is φ = 13121929030000.

The previous prime is 13123000220129. The next prime is 13123000220173. The reversal of 13123000220131 is 13102200032131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13123000220131 - 2¹ = 13123000220129 is a prime.

It is a super-2 number, since 2×13123000220131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13123000220099 and 13123000220108.

It is not an unprimeable number, because it can be changed into a prime (13123000290131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535576690 + ... + 535601191.

It is an arithmetic number, because the mean of its divisors is an integer number (3281017852566).

Almost surely, 2^{13123000220131} is an apocalyptic number.

13123000220131 is a deficient number, since it is larger than the sum of its proper divisors (1071190133).

13123000220131 is a wasteful number, since it uses less digits than its factorization.

13123000220131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071190132.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13123000220131 its reverse (13102200032131), we get a palindrome (26225200252262).

The spelling of 13123000220131 in words is "thirteen trillion, one hundred twenty-three billion, two hundred twenty thousand, one hundred thirty-one".