312771668 has 24 divisors (see below), whose sum is σ = 600251904. Its totient is φ = 141420800.

The previous prime is 312771659. The next prime is 312771671. The reversal of 312771668 is 866177213.

It is a super-2 number, since 2×312771668² = 195652232607004448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10205 + ... + 27012.

It is an arithmetic number, because the mean of its divisors is an integer number (25010496).

Almost surely, 2^312771668 is an apocalyptic number.

It is an amenable number.

312771668 is a deficient number, since it is larger than the sum of its proper divisors (287480236).

312771668 is a wasteful number, since it uses less digits than its factorization.

312771668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37423 (or 37421 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 312771668 is about 17685.3517918078. The cubic root of 312771668 is about 678.8009926338.

The spelling of 312771668 in words is "three hundred twelve million, seven hundred seventy-one thousand, six hundred sixty-eight".