312885371338 has 4 divisors (see below), whose sum is σ = 469328057010. Its totient is φ = 156442685668.

The previous prime is 312885371291. The next prime is 312885371387. The reversal of 312885371338 is 833173588213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 833173588213 = 389 ⋅2141834417.

It can be written as a sum of positive squares in only one way, i.e., 238551165889 + 74334205449 = 488417^2 + 272643^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78221342833 + ... + 78221342836.

Almost surely, 2^312885371338 is an apocalyptic number.

312885371338 is a deficient number, since it is larger than the sum of its proper divisors (156442685672).

312885371338 is a wasteful number, since it uses less digits than its factorization.

312885371338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156442685671.

The product of its digits is 2903040, while the sum is 52.

The spelling of 312885371338 in words is "three hundred twelve billion, eight hundred eighty-five million, three hundred seventy-one thousand, three hundred thirty-eight".