20130120131 has 16 divisors (see below), whose sum is σ = 22082457600. Its totient is φ = 18198352320.

The previous prime is 20130120107. The next prime is 20130120161. The reversal of 20130120131 is 13102103102.

It is a cyclic number.

It is not a de Polignac number, because 20130120131 - 2¹⁸ = 20129857987 is a prime.

It is a super-2 number, since 2×20130120131² (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 (20130120161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2569286 + ... + 2577108.

It is an arithmetic number, because the mean of its divisors is an integer number (1380153600).

Almost surely, 2^20130120131 is an apocalyptic number.

20130120131 is a deficient number, since it is larger than the sum of its proper divisors (1952337469).

20130120131 is a wasteful number, since it uses less digits than its factorization.

20130120131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9106.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20130120131 its reverse (13102103102), we get a palindrome (33232223233).

The spelling of 20130120131 in words is "twenty billion, one hundred thirty million, one hundred twenty thousand, one hundred thirty-one".