30974017517 has 2 divisors, whose sum is σ = 30974017518. Its totient is φ = 30974017516.

The previous prime is 30974017511. The next prime is 30974017577. The reversal of 30974017517 is 71571047903.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24512912356 + 6461105161 = 156566^2 + 80381^2 .

It is an emirp because it is prime and its reverse (71571047903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30974017517 - 2¹⁴ = 30974001133 is a prime.

It is a super-2 number, since 2×30974017517² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30974017511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15487008758 + 15487008759.

It is an arithmetic number, because the mean of its divisors is an integer number (15487008759).

Almost surely, 2^30974017517 is an apocalyptic number.

It is an amenable number.

30974017517 is a deficient number, since it is larger than the sum of its proper divisors (1).

30974017517 is an equidigital number, since it uses as much as digits as its factorization.

30974017517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 185220, while the sum is 44.

The spelling of 30974017517 in words is "thirty billion, nine hundred seventy-four million, seventeen thousand, five hundred seventeen".