621134313 has 4 divisors (see below), whose sum is σ = 828179088. Its totient is φ = 414089540.

The previous prime is 621134303. The next prime is 621134323. The reversal of 621134313 is 313431126.

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 an interprime number because it is at equal distance from previous prime (621134303) and next prime (621134323).

It is a cyclic number.

It is not a de Polignac number, because 621134313 - 2¹⁸ = 620872169 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (621134303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103522383 + ... + 103522388.

It is an arithmetic number, because the mean of its divisors is an integer number (207044772).

Almost surely, 2^621134313 is an apocalyptic number.

It is an amenable number.

621134313 is a deficient number, since it is larger than the sum of its proper divisors (207044775).

621134313 is a wasteful number, since it uses less digits than its factorization.

621134313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207044774.

The product of its digits is 1296, while the sum is 24.

The square root of 621134313 is about 24922.5663405677. The cubic root of 621134313 is about 853.2215981054.

Adding to 621134313 its reverse (313431126), we get a palindrome (934565439).

The spelling of 621134313 in words is "six hundred twenty-one million, one hundred thirty-four thousand, three hundred thirteen".