1247327023 has 4 divisors (see below), whose sum is σ = 1248190480. Its totient is φ = 1246463568.

The previous prime is 1247326987. The next prime is 1247327027. The reversal of 1247327023 is 3207237421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3207237421 = 197 ⋅16280393.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1247327023 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 (1247327027) 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, 429558 + ... + 432451.

It is an arithmetic number, because the mean of its divisors is an integer number (312047620).

Almost surely, 2^1247327023 is an apocalyptic number.

1247327023 is a deficient number, since it is larger than the sum of its proper divisors (863457).

1247327023 is an equidigital number, since it uses as much as digits as its factorization.

1247327023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863456.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 1247327023 is about 35317.5172258753. The cubic root of 1247327023 is about 1076.4489631409.

The spelling of 1247327023 in words is "one billion, two hundred forty-seven million, three hundred twenty-seven thousand, twenty-three".