397103434517 has 2 divisors, whose sum is σ = 397103434518. Its totient is φ = 397103434516.

The previous prime is 397103434493. The next prime is 397103434529. The reversal of 397103434517 is 715434301793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 363191843716 + 33911590801 = 602654^2 + 184151^2 .

It is a cyclic number.

It is not a de Polignac number, because 397103434517 - 2²⁰ = 397102385941 is a prime.

It is a super-2 number, since 2×397103434517² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397103434817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198551717258 + 198551717259.

It is an arithmetic number, because the mean of its divisors is an integer number (198551717259).

Almost surely, 2^397103434517 is an apocalyptic number.

It is an amenable number.

397103434517 is a deficient number, since it is larger than the sum of its proper divisors (1).

397103434517 is an equidigital number, since it uses as much as digits as its factorization.

397103434517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 952560, while the sum is 47.

The spelling of 397103434517 in words is "three hundred ninety-seven billion, one hundred three million, four hundred thirty-four thousand, five hundred seventeen".