1312383274 has 4 divisors (see below), whose sum is σ = 1968574914. Its totient is φ = 656191636.

The previous prime is 1312383271. The next prime is 1312383287. The reversal of 1312383274 is 4723832131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4723832131 = 61 ⋅77439871.

It can be written as a sum of positive squares in only one way, i.e., 1289887225 + 22496049 = 35915^2 + 4743^2 .

It is not an unprimeable number, because it can be changed into a prime (1312383271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328095817 + ... + 328095820.

Almost surely, 2^1312383274 is an apocalyptic number.

1312383274 is a deficient number, since it is larger than the sum of its proper divisors (656191640).

1312383274 is an equidigital number, since it uses as much as digits as its factorization.

1312383274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656191639.

The product of its digits is 24192, while the sum is 34.

The square root of 1312383274 is about 36226.8308578048. The cubic root of 1312383274 is about 1094.8473266287.

The spelling of 1312383274 in words is "one billion, three hundred twelve million, three hundred eighty-three thousand, two hundred seventy-four".