1117537931 has 2 divisors, whose sum is σ = 1117537932. Its totient is φ = 1117537930.

The previous prime is 1117537903. The next prime is 1117537933. The reversal of 1117537931 is 1397357111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1117537931 is a prime.

It is a super-2 number, since 2×1117537931² = 2497782054447521522, which contains 22 as substring.

Together with 1117537933, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1117537933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558768965 + 558768966.

It is an arithmetic number, because the mean of its divisors is an integer number (558768966).

Almost surely, 2^1117537931 is an apocalyptic number.

1117537931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117537931 is an equidigital number, since it uses as much as digits as its factorization.

1117537931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19845, while the sum is 38.

The square root of 1117537931 is about 33429.5966323257. The cubic root of 1117537931 is about 1037.7372931078.

The spelling of 1117537931 in words is "one billion, one hundred seventeen million, five hundred thirty-seven thousand, nine hundred thirty-one".