11320013031 has 16 divisors (see below), whose sum is σ = 15454217856. Its totient is φ = 7366466016.

The previous prime is 11320013011. The next prime is 11320013053. The reversal of 11320013031 is 13031002311.

It is not a de Polignac number, because 11320013031 - 2⁵ = 11320012999 is a prime.

It is a super-2 number, since 2×11320013031² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11320013031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11320013011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180876 + ... + 235278.

It is an arithmetic number, because the mean of its divisors is an integer number (965888616).

Almost surely, 2^11320013031 is an apocalyptic number.

11320013031 is a deficient number, since it is larger than the sum of its proper divisors (4134204825).

11320013031 is a wasteful number, since it uses less digits than its factorization.

11320013031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56062.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 11320013031 its reverse (13031002311), we get a palindrome (24351015342).

The spelling of 11320013031 in words is "eleven billion, three hundred twenty million, thirteen thousand, thirty-one".