1131202113131 has 4 divisors (see below), whose sum is σ = 1140109216512. Its totient is φ = 1122295009752.

The previous prime is 1131202113127. The next prime is 1131202113169. The reversal of 1131202113131 is 1313112021311.

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 1131202113131 - 2² = 1131202113127 is a prime.

It is a super-2 number, since 2×1131202113131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131202113331) 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, 4453551500 + ... + 4453551753.

It is an arithmetic number, because the mean of its divisors is an integer number (285027304128).

Almost surely, 2^{1131202113131} is an apocalyptic number.

1131202113131 is a deficient number, since it is larger than the sum of its proper divisors (8907103381).

1131202113131 is an equidigital number, since it uses as much as digits as its factorization.

1131202113131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8907103380.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1131202113131 its reverse (1313112021311), we get a palindrome (2444314134442).

The spelling of 1131202113131 in words is "one trillion, one hundred thirty-one billion, two hundred two million, one hundred thirteen thousand, one hundred thirty-one".