20100313310131 has 16 divisors (see below), whose sum is σ = 21234752324640. Its totient is φ = 18973578274560.

The previous prime is 20100313310123. The next prime is 20100313310173. The reversal of 20100313310131 is 13101331300102.

It is a cyclic number.

It is not a de Polignac number, because 20100313310131 - 2³ = 20100313310123 is a prime.

It is a super-2 number, since 2×20100313310131² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20100313310099 and 20100313310108.

It is not an unprimeable number, because it can be changed into a prime (20100313310101) 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, 13450041 + ... + 14869573.

It is an arithmetic number, because the mean of its divisors is an integer number (1327172020290).

Almost surely, 2^{20100313310131} is an apocalyptic number.

20100313310131 is a deficient number, since it is larger than the sum of its proper divisors (1134439014509).

20100313310131 is a wasteful number, since it uses less digits than its factorization.

20100313310131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422246.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 20100313310131 its reverse (13101331300102), we get a palindrome (33201644610233).

The spelling of 20100313310131 in words is "twenty trillion, one hundred billion, three hundred thirteen million, three hundred ten thousand, one hundred thirty-one".