30123131300257 has 2 divisors, whose sum is σ = 30123131300258. Its totient is φ = 30123131300256.

The previous prime is 30123131300231. The next prime is 30123131300291. The reversal of 30123131300257 is 75200313132103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27728186251536 + 2394945048721 = 5265756^2 + 1547561^2 .

It is a cyclic number.

It is not a de Polignac number, because 30123131300257 - 2²³ = 30123122911649 is a prime.

It is not a weakly prime, because it can be changed into another prime (30123131300957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15061565650128 + 15061565650129.

It is an arithmetic number, because the mean of its divisors is an integer number (15061565650129).

Almost surely, 2^{30123131300257} is an apocalyptic number.

It is an amenable number.

30123131300257 is a deficient number, since it is larger than the sum of its proper divisors (1).

30123131300257 is an equidigital number, since it uses as much as digits as its factorization.

30123131300257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 31.

The spelling of 30123131300257 in words is "thirty trillion, one hundred twenty-three billion, one hundred thirty-one million, three hundred thousand, two hundred fifty-seven".