1312982247 has 4 divisors (see below), whose sum is σ = 1750643000. Its totient is φ = 875321496.

The previous prime is 1312982227. The next prime is 1312982249. The reversal of 1312982247 is 7422892131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7422892131 = 3 ⋅2474297377.

It is not a de Polignac number, because 1312982247 - 2¹² = 1312978151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312982249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218830372 + ... + 218830377.

It is an arithmetic number, because the mean of its divisors is an integer number (437660750).

Almost surely, 2^1312982247 is an apocalyptic number.

1312982247 is a deficient number, since it is larger than the sum of its proper divisors (437660753).

1312982247 is an equidigital number, since it uses as much as digits as its factorization.

1312982247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437660752.

The product of its digits is 48384, while the sum is 39.

The square root of 1312982247 is about 36235.0968951375. The cubic root of 1312982247 is about 1095.0138644228.

The spelling of 1312982247 in words is "one billion, three hundred twelve million, nine hundred eighty-two thousand, two hundred forty-seven".