1109697931 has 2 divisors, whose sum is σ = 1109697932. Its totient is φ = 1109697930.

The previous prime is 1109697839. The next prime is 1109697937. The reversal of 1109697931 is 1397969011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1109697931 - 2⁷ = 1109697803 is a prime.

It is a super-2 number, since 2×1109697931² = 2462858996131361522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1109697937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 554848965 + 554848966.

It is an arithmetic number, because the mean of its divisors is an integer number (554848966).

Almost surely, 2^1109697931 is an apocalyptic number.

1109697931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1109697931 is an equidigital number, since it uses as much as digits as its factorization.

1109697931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 46.

The square root of 1109697931 is about 33312.1288872387. The cubic root of 1109697931 is about 1035.3048744403.

The spelling of 1109697931 in words is "one billion, one hundred nine million, six hundred ninety-seven thousand, nine hundred thirty-one".