351280013 has 4 divisors (see below), whose sum is σ = 401462880. Its totient is φ = 301097148.

The previous prime is 351280009. The next prime is 351280019. The reversal of 351280013 is 310082153.

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, and also an emirpimes, since its reverse is a distinct semiprime: 310082153 = 487 ⋅636719.

It is a cyclic number.

It is not a de Polignac number, because 351280013 - 2² = 351280009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351280019) 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, 25091423 + ... + 25091436.

It is an arithmetic number, because the mean of its divisors is an integer number (100365720).

Almost surely, 2^351280013 is an apocalyptic number.

It is an amenable number.

351280013 is a deficient number, since it is larger than the sum of its proper divisors (50182867).

351280013 is an equidigital number, since it uses as much as digits as its factorization.

351280013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50182866.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 351280013 is about 18742.4654995014. The cubic root of 351280013 is about 705.5879360242.

The spelling of 351280013 in words is "three hundred fifty-one million, two hundred eighty thousand, thirteen".