312919223450 has 24 divisors (see below), whose sum is σ = 602099749980. Its totient is φ = 120851561600.

The previous prime is 312919223437. The next prime is 312919223453. The reversal of 312919223450 is 54322919213.

It can be written as a sum of positive squares in 6 ways, for example, as 114137892649 + 198781330801 = 337843^2 + 445849^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312919223398 and 312919223407.

It is not an unprimeable number, because it can be changed into a prime (312919223453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107901731 + ... + 107904630.

Almost surely, 2^312919223450 is an apocalyptic number.

312919223450 is a deficient number, since it is larger than the sum of its proper divisors (289180526530).

312919223450 is a wasteful number, since it uses less digits than its factorization.

312919223450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215806402 (or 215806397 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 312919223450 in words is "three hundred twelve billion, nine hundred nineteen million, two hundred twenty-three thousand, four hundred fifty".