10131220313131 has 4 divisors (see below), whose sum is σ = 10135493289064. Its totient is φ = 10126947337200.

The previous prime is 10131220313113. The next prime is 10131220313143. The reversal of 10131220313131 is 13131302213101.

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 10131220313131 - 2⁵ = 10131220313099 is a prime.

It is a super-2 number, since 2×10131220313131² (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 (10131220313101) 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, 2136484410 + ... + 2136489151.

It is an arithmetic number, because the mean of its divisors is an integer number (2533873322266).

Almost surely, 2^{10131220313131} is an apocalyptic number.

10131220313131 is a deficient number, since it is larger than the sum of its proper divisors (4272975933).

10131220313131 is an equidigital number, since it uses as much as digits as its factorization.

10131220313131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4272975932.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 10131220313131 its reverse (13131302213101), we get a palindrome (23262522526232).

The spelling of 10131220313131 in words is "ten trillion, one hundred thirty-one billion, two hundred twenty million, three hundred thirteen thousand, one hundred thirty-one".