11031013993 has 4 divisors (see below), whose sum is σ = 11031985620. Its totient is φ = 11030042368.

The previous prime is 11031013943. The next prime is 11031014011. The reversal of 11031013993 is 39931013011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39931013011 = 887 ⋅45018053.

It can be written as a sum of positive squares in 2 ways, for example, as 5459436544 + 5571577449 = 73888^2 + 74643^2 .

It is a cyclic number.

It is not a de Polignac number, because 11031013993 - 2¹⁷ = 11030882921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11031013943) 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, 468580 + ... + 491557.

It is an arithmetic number, because the mean of its divisors is an integer number (2757996405).

Almost surely, 2^11031013993 is an apocalyptic number.

It is an amenable number.

11031013993 is a deficient number, since it is larger than the sum of its proper divisors (971627).

11031013993 is an equidigital number, since it uses as much as digits as its factorization.

11031013993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971626.

The product of its (nonzero) digits is 2187, while the sum is 31.

The spelling of 11031013993 in words is "eleven billion, thirty-one million, thirteen thousand, nine hundred ninety-three".