247427371 has 4 divisors (see below), whose sum is σ = 247462744. Its totient is φ = 247392000.

The previous prime is 247427359. The next prime is 247427381. The reversal of 247427371 is 173724742.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 173724742 = 2 ⋅86862371.

It is a cyclic number.

It is not a de Polignac number, because 247427371 - 2⁵ = 247427339 is a prime.

It is a super-2 number, since 2×247427371² = 122440607839943282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 247427371.

It is not an unprimeable number, because it can be changed into a prime (247427381) 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, 3285 + ... + 22486.

It is an arithmetic number, because the mean of its divisors is an integer number (61865686).

Almost surely, 2^247427371 is an apocalyptic number.

247427371 is a deficient number, since it is larger than the sum of its proper divisors (35373).

247427371 is an equidigital number, since it uses as much as digits as its factorization.

247427371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35372.

The product of its digits is 65856, while the sum is 37.

The square root of 247427371 is about 15729.8242520379. The cubic root of 247427371 is about 627.7921971598.

The spelling of 247427371 in words is "two hundred forty-seven million, four hundred twenty-seven thousand, three hundred seventy-one".