30243123397 has 2 divisors, whose sum is σ = 30243123398. Its totient is φ = 30243123396.

The previous prime is 30243123377. The next prime is 30243123401. The reversal of 30243123397 is 79332134203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21447309601 + 8795813796 = 146449^2 + 93786^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30243123397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30243123377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15121561698 + 15121561699.

It is an arithmetic number, because the mean of its divisors is an integer number (15121561699).

Almost surely, 2^30243123397 is an apocalyptic number.

It is an amenable number.

30243123397 is a deficient number, since it is larger than the sum of its proper divisors (1).

30243123397 is an equidigital number, since it uses as much as digits as its factorization.

30243123397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 37.

The spelling of 30243123397 in words is "thirty billion, two hundred forty-three million, one hundred twenty-three thousand, three hundred ninety-seven".