312778383 has 16 divisors (see below), whose sum is σ = 420790656. Its totient is φ = 206650080.

The previous prime is 312778321. The next prime is 312778397. The reversal of 312778383 is 383877213.

It is not a de Polignac number, because 312778383 - 2¹⁰ = 312777359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312778303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268360 + ... + 269522.

It is an arithmetic number, because the mean of its divisors is an integer number (26299416).

Almost surely, 2^312778383 is an apocalyptic number.

312778383 is a deficient number, since it is larger than the sum of its proper divisors (108012273).

312778383 is a wasteful number, since it uses less digits than its factorization.

312778383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894.

The product of its digits is 169344, while the sum is 42.

The square root of 312778383 is about 17685.5416371679. The cubic root of 312778383 is about 678.8058504012.

The spelling of 312778383 in words is "three hundred twelve million, seven hundred seventy-eight thousand, three hundred eighty-three".