11321302131 has 6 divisors (see below), whose sum is σ = 16352991980. Its totient is φ = 7547534748.

The previous prime is 11321302123. The next prime is 11321302147. The reversal of 11321302131 is 13120312311.

11321302131 is a `hidden beast` number, since 11 + 321 + 302 + 1 + 31 = 666.

It is not a de Polignac number, because 11321302131 - 2³ = 11321302123 is a prime.

It is a super-2 number, since 2×11321302131² (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 (11321302151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 628961221 + ... + 628961238.

Almost surely, 2^11321302131 is an apocalyptic number.

11321302131 is a deficient number, since it is larger than the sum of its proper divisors (5031689849).

11321302131 is a wasteful number, since it uses less digits than its factorization.

11321302131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257922465 (or 1257922462 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11321302131 its reverse (13120312311), we get a palindrome (24441614442).

The spelling of 11321302131 in words is "eleven billion, three hundred twenty-one million, three hundred two thousand, one hundred thirty-one".