247423471 has 4 divisors (see below), whose sum is σ = 250203600. Its totient is φ = 244643344.

The previous prime is 247423469. The next prime is 247423513. The reversal of 247423471 is 174324742.

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

It is a cyclic number.

It is not a de Polignac number, because 247423471 - 2¹ = 247423469 is a prime.

It is a super-3 number, since 3×247423471³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247423411) 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, 1389931 + ... + 1390108.

It is an arithmetic number, because the mean of its divisors is an integer number (62550900).

Almost surely, 2^247423471 is an apocalyptic number.

247423471 is a deficient number, since it is larger than the sum of its proper divisors (2780129).

247423471 is an equidigital number, since it uses as much as digits as its factorization.

247423471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780128.

The product of its digits is 37632, while the sum is 34.

The square root of 247423471 is about 15729.7002832222. The cubic root of 247423471 is about 627.7888986802.

The spelling of 247423471 in words is "two hundred forty-seven million, four hundred twenty-three thousand, four hundred seventy-one".