247023047 has 4 divisors (see below), whose sum is σ = 260024280. Its totient is φ = 234021816.

The previous prime is 247023041. The next prime is 247023053. The reversal of 247023047 is 740320742.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (247023041) and next prime (247023053).

It is a cyclic number.

It is not a de Polignac number, because 247023047 - 2⁴ = 247023031 is a prime.

It is a super-2 number, since 2×247023047² = 122040771498328418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247023041) 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, 6500588 + ... + 6500625.

It is an arithmetic number, because the mean of its divisors is an integer number (65006070).

Almost surely, 2^247023047 is an apocalyptic number.

247023047 is a deficient number, since it is larger than the sum of its proper divisors (13001233).

247023047 is a wasteful number, since it uses less digits than its factorization.

247023047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13001232.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 247023047 is about 15716.9668511453. The cubic root of 247023047 is about 627.4500498326.

Adding to 247023047 its reverse (740320742), we get a palindrome (987343789).

The spelling of 247023047 in words is "two hundred forty-seven million, twenty-three thousand, forty-seven".