281797413 has 4 divisors (see below), whose sum is σ = 375729888. Its totient is φ = 187864940.

The previous prime is 281797381. The next prime is 281797421. The reversal of 281797413 is 314797182.

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 a cyclic number.

It is not a de Polignac number, because 281797413 - 2⁵ = 281797381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281795413) 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, 46966233 + ... + 46966238.

It is an arithmetic number, because the mean of its divisors is an integer number (93932472).

Almost surely, 2^281797413 is an apocalyptic number.

It is an amenable number.

281797413 is a deficient number, since it is larger than the sum of its proper divisors (93932475).

281797413 is an equidigital number, since it uses as much as digits as its factorization.

281797413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93932474.

The product of its digits is 84672, while the sum is 42.

The square root of 281797413 is about 16786.8225998847. The cubic root of 281797413 is about 655.6101480034.

The spelling of 281797413 in words is "two hundred eighty-one million, seven hundred ninety-seven thousand, four hundred thirteen".