11321112131 has 8 divisors (see below), whose sum is σ = 12939921504. Its totient is φ = 9702679680.

The previous prime is 11321112113. The next prime is 11321112149. The reversal of 11321112131 is 13121112311.

It is an interprime number because it is at equal distance from previous prime (11321112113) and next prime (11321112149).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11321112131 - 2²² = 11316917827 is a prime.

It is a super-2 number, since 2×11321112131² (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 (11321112151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26630 + ... + 152811.

It is an arithmetic number, because the mean of its divisors is an integer number (1617490188).

Almost surely, 2^11321112131 is an apocalyptic number.

11321112131 is a deficient number, since it is larger than the sum of its proper divisors (1618809373).

11321112131 is an equidigital number, since it uses as much as digits as its factorization.

11321112131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188461.

The product of its digits is 36, while the sum is 17.

Adding to 11321112131 its reverse (13121112311), we get a palindrome (24442224442).

The spelling of 11321112131 in words is "eleven billion, three hundred twenty-one million, one hundred twelve thousand, one hundred thirty-one".