1224697931 has 2 divisors, whose sum is σ = 1224697932. Its totient is φ = 1224697930.

The previous prime is 1224697883. The next prime is 1224697963. The reversal of 1224697931 is 1397964221.

It is a strong prime.

It is an emirp because it is prime and its reverse (1397964221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224697931 is a prime.

It is a super-2 number, since 2×1224697931² = 2999770044391361522, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1224697631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612348965 + 612348966.

It is an arithmetic number, because the mean of its divisors is an integer number (612348966).

Almost surely, 2^1224697931 is an apocalyptic number.

1224697931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224697931 is an equidigital number, since it uses as much as digits as its factorization.

1224697931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 1224697931 is about 34995.6844625162. The cubic root of 1224697931 is about 1069.8995250227.

The spelling of 1224697931 in words is "one billion, two hundred twenty-four million, six hundred ninety-seven thousand, nine hundred thirty-one".