312203313 has 12 divisors (see below), whose sum is σ = 454206480. Its totient is φ = 206637336.

The previous prime is 312203303. The next prime is 312203321. The reversal of 312203313 is 313302213.

312203313 is a `hidden beast` number, since 312 + 20 + 331 + 3 = 666.

It is not a de Polignac number, because 312203313 - 2¹⁸ = 311941169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312203303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123531 + ... + 126032.

It is an arithmetic number, because the mean of its divisors is an integer number (37850540).

Almost surely, 2^312203313 is an apocalyptic number.

It is an amenable number.

312203313 is a deficient number, since it is larger than the sum of its proper divisors (142003167).

312203313 is a wasteful number, since it uses less digits than its factorization.

312203313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249708 (or 249705 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 312203313 is about 17669.2759613969. The cubic root of 312203313 is about 678.3895808382.

Adding to 312203313 its reverse (313302213), we get a palindrome (625505526).

The spelling of 312203313 in words is "three hundred twelve million, two hundred three thousand, three hundred thirteen".