11314991947 has 6 divisors (see below), whose sum is σ = 13162337628. Its totient is φ = 9698564484.

The previous prime is 11314991881. The next prime is 11314991951. The reversal of 11314991947 is 74919941311.

It is not a de Polignac number, because 11314991947 - 2⁷ = 11314991819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 230918203 = 11314991947 / (1 + 1 + 3 + 1 + 4 + 9 + 9 + 1 + 9 + 4 + 7).

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 11314991947.

It is not an unprimeable number, because it can be changed into a prime (11314992947) 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, 115459053 + ... + 115459150.

It is an arithmetic number, because the mean of its divisors is an integer number (2193722938).

Almost surely, 2^11314991947 is an apocalyptic number.

11314991947 is a deficient number, since it is larger than the sum of its proper divisors (1847345681).

11314991947 is an equidigital number, since it uses as much as digits as its factorization.

11314991947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230918217 (or 230918210 counting only the distinct ones).

The product of its digits is 244944, while the sum is 49.

The spelling of 11314991947 in words is "eleven billion, three hundred fourteen million, nine hundred ninety-one thousand, nine hundred forty-seven".