973398306731 has 2 divisors, whose sum is σ = 973398306732. Its totient is φ = 973398306730.

The previous prime is 973398306703. The next prime is 973398306757. The reversal of 973398306731 is 137603893379.

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-973398306731 is a prime.

It is a super-2 number, since 2×973398306731² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (973398306781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486699153365 + 486699153366.

It is an arithmetic number, because the mean of its divisors is an integer number (486699153366).

Almost surely, 2^973398306731 is an apocalyptic number.

973398306731 is a deficient number, since it is larger than the sum of its proper divisors (1).

973398306731 is an equidigital number, since it uses as much as digits as its factorization.

973398306731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15431472, while the sum is 59.

The spelling of 973398306731 in words is "nine hundred seventy-three billion, three hundred ninety-eight million, three hundred six thousand, seven hundred thirty-one".