30321310973 has 2 divisors, whose sum is σ = 30321310974. Its totient is φ = 30321310972.

The previous prime is 30321310969. The next prime is 30321311057. The reversal of 30321310973 is 37901312303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23214483769 + 7106827204 = 152363^2 + 84302^2 .

It is a cyclic number.

It is not a de Polignac number, because 30321310973 - 2² = 30321310969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30321310073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15160655486 + 15160655487.

It is an arithmetic number, because the mean of its divisors is an integer number (15160655487).

Almost surely, 2^30321310973 is an apocalyptic number.

It is an amenable number.

30321310973 is a deficient number, since it is larger than the sum of its proper divisors (1).

30321310973 is an equidigital number, since it uses as much as digits as its factorization.

30321310973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 32.

The spelling of 30321310973 in words is "thirty billion, three hundred twenty-one million, three hundred ten thousand, nine hundred seventy-three".