312450172193 has 2 divisors, whose sum is σ = 312450172194. Its totient is φ = 312450172192.

The previous prime is 312450172121. The next prime is 312450172207. The reversal of 312450172193 is 391271054213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305862090304 + 6588081889 = 553048^2 + 81167^2 .

It is a cyclic number.

It is not a de Polignac number, because 312450172193 - 2²⁰ = 312449123617 is a prime.

It is a super-2 number, since 2×312450172193² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (312450172103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156225086096 + 156225086097.

It is an arithmetic number, because the mean of its divisors is an integer number (156225086097).

Almost surely, 2^312450172193 is an apocalyptic number.

It is an amenable number.

312450172193 is a deficient number, since it is larger than the sum of its proper divisors (1).

312450172193 is an equidigital number, since it uses as much as digits as its factorization.

312450172193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The spelling of 312450172193 in words is "three hundred twelve billion, four hundred fifty million, one hundred seventy-two thousand, one hundred ninety-three".