281630413 has 8 divisors (see below), whose sum is σ = 287762400. Its totient is φ = 275555280.

The previous prime is 281630341. The next prime is 281630417. The reversal of 281630413 is 314036182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 281630413 - 2¹⁷ = 281499341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (281630417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4123 + ... + 24088.

It is an arithmetic number, because the mean of its divisors is an integer number (35970300).

Almost surely, 2^281630413 is an apocalyptic number.

It is an amenable number.

281630413 is a deficient number, since it is larger than the sum of its proper divisors (6131987).

281630413 is a wasteful number, since it uses less digits than its factorization.

281630413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28427.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 281630413 is about 16781.8477230608. The cubic root of 281630413 is about 655.4806122389.

Adding to 281630413 its reverse (314036182), we get a palindrome (595666595).

The spelling of 281630413 in words is "two hundred eighty-one million, six hundred thirty thousand, four hundred thirteen".