312392509193 has 16 divisors (see below), whose sum is σ = 329149234176. Its totient is φ = 296173687680.

The previous prime is 312392509153. The next prime is 312392509223. The reversal of 312392509193 is 391905293213.

It is a cyclic number.

It is not a de Polignac number, because 312392509193 - 2⁸ = 312392508937 is a prime.

It is a super-2 number, since 2×312392509193² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (312392509153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472553 + ... + 920918.

It is an arithmetic number, because the mean of its divisors is an integer number (20571827136).

Almost surely, 2^312392509193 is an apocalyptic number.

It is an amenable number.

312392509193 is a deficient number, since it is larger than the sum of its proper divisors (16756724983).

312392509193 is a wasteful number, since it uses less digits than its factorization.

312392509193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393664.

The product of its (nonzero) digits is 393660, while the sum is 47.

The spelling of 312392509193 in words is "three hundred twelve billion, three hundred ninety-two million, five hundred nine thousand, one hundred ninety-three".