312940099 has 4 divisors (see below), whose sum is σ = 313461400. Its totient is φ = 312418800.

The previous prime is 312940091. The next prime is 312940141. The reversal of 312940099 is 990049213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990049213 = 17 ⋅58238189.

It is a cyclic number.

It is not a de Polignac number, because 312940099 - 2³ = 312940091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312940091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259749 + ... + 260950.

It is an arithmetic number, because the mean of its divisors is an integer number (78365350).

Almost surely, 2^312940099 is an apocalyptic number.

312940099 is a deficient number, since it is larger than the sum of its proper divisors (521301).

312940099 is an equidigital number, since it uses as much as digits as its factorization.

312940099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521300.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 312940099 is about 17690.1130295993. The cubic root of 312940099 is about 678.9228180472.

The spelling of 312940099 in words is "three hundred twelve million, nine hundred forty thousand, ninety-nine".