247351413 has 4 divisors (see below), whose sum is σ = 329801888. Its totient is φ = 164900940.

The previous prime is 247351409. The next prime is 247351441. The reversal of 247351413 is 314153742.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 247351413 - 2² = 247351409 is a prime.

It is a super-2 number, since 2×247351413² = 122365443026193138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247353413) 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, 41225233 + ... + 41225238.

It is an arithmetic number, because the mean of its divisors is an integer number (82450472).

Almost surely, 2^247351413 is an apocalyptic number.

It is an amenable number.

247351413 is a deficient number, since it is larger than the sum of its proper divisors (82450475).

247351413 is an equidigital number, since it uses as much as digits as its factorization.

247351413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82450474.

The product of its digits is 10080, while the sum is 30.

The square root of 247351413 is about 15727.4096087054. The cubic root of 247351413 is about 627.7279483797.

The spelling of 247351413 in words is "two hundred forty-seven million, three hundred fifty-one thousand, four hundred thirteen".