673809442331 has 2 divisors, whose sum is σ = 673809442332. Its totient is φ = 673809442330.

The previous prime is 673809442277. The next prime is 673809442337. The reversal of 673809442331 is 133244908376.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673809442331 is a prime.

It is a super-2 number, since 2×673809442331² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 673809442331.

It is not a weakly prime, because it can be changed into another prime (673809442337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336904721165 + 336904721166.

It is an arithmetic number, because the mean of its divisors is an integer number (336904721166).

Almost surely, 2^673809442331 is an apocalyptic number.

673809442331 is a deficient number, since it is larger than the sum of its proper divisors (1).

673809442331 is an equidigital number, since it uses as much as digits as its factorization.

673809442331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 673809442331 in words is "six hundred seventy-three billion, eight hundred nine million, four hundred forty-two thousand, three hundred thirty-one".