20130123023131 has 4 divisors (see below), whose sum is σ = 21960134207064. Its totient is φ = 18300111839200.

The previous prime is 20130123023083. The next prime is 20130123023207. The reversal of 20130123023131 is 13132032103102.

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 20130123023131 - 2¹⁷ = 20130122892059 is a prime.

It is a super-2 number, since 2×20130123023131² (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 (20130123023431) 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, 915005591950 + ... + 915005591971.

It is an arithmetic number, because the mean of its divisors is an integer number (5490033551766).

Almost surely, 2^{20130123023131} is an apocalyptic number.

20130123023131 is a deficient number, since it is larger than the sum of its proper divisors (1830011183933).

20130123023131 is a wasteful number, since it uses less digits than its factorization.

20130123023131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830011183932.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20130123023131 its reverse (13132032103102), we get a palindrome (33262155126233).

The spelling of 20130123023131 in words is "twenty trillion, one hundred thirty billion, one hundred twenty-three million, twenty-three thousand, one hundred thirty-one".