11320321931 has 4 divisors (see below), whose sum is σ = 11321754000. Its totient is φ = 11318889864.

The previous prime is 11320321927. The next prime is 11320321937. The reversal of 11320321931 is 13912302311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13912302311 = 131 ⋅106200781.

It is a cyclic number.

It is not a de Polignac number, because 11320321931 - 2² = 11320321927 is a prime.

It is a super-2 number, since 2×11320321931² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11320321931.

It is not an unprimeable number, because it can be changed into a prime (11320321937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704111 + ... + 720008.

It is an arithmetic number, because the mean of its divisors is an integer number (2830438500).

Almost surely, 2^11320321931 is an apocalyptic number.

11320321931 is a deficient number, since it is larger than the sum of its proper divisors (1432069).

11320321931 is an equidigital number, since it uses as much as digits as its factorization.

11320321931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432068.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 11320321931 in words is "eleven billion, three hundred twenty million, three hundred twenty-one thousand, nine hundred thirty-one".