1312214782 has 4 divisors (see below), whose sum is σ = 1968322176. Its totient is φ = 656107390.

The previous prime is 1312214777. The next prime is 1312214851. The reversal of 1312214782 is 2874122131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2874122131 = 971 ⋅2959961.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328053694 + ... + 328053697.

It is an arithmetic number, because the mean of its divisors is an integer number (492080544).

Almost surely, 2^1312214782 is an apocalyptic number.

1312214782 is a deficient number, since it is larger than the sum of its proper divisors (656107394).

1312214782 is an equidigital number, since it uses as much as digits as its factorization.

1312214782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656107393.

The product of its digits is 5376, while the sum is 31.

The square root of 1312214782 is about 36224.5052692235. The cubic root of 1312214782 is about 1094.8004701667.

The spelling of 1312214782 in words is "one billion, three hundred twelve million, two hundred fourteen thousand, seven hundred eighty-two".