630311133 has 4 divisors (see below), whose sum is σ = 840414848. Its totient is φ = 420207420.

The previous prime is 630311131. The next prime is 630311137. The reversal of 630311133 is 331113036.

630311133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 630311133 - 2¹ = 630311131 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 (630311131) 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, 105051853 + ... + 105051858.

It is an arithmetic number, because the mean of its divisors is an integer number (210103712).

Almost surely, 2^630311133 is an apocalyptic number.

It is an amenable number.

630311133 is a deficient number, since it is larger than the sum of its proper divisors (210103715).

630311133 is a wasteful number, since it uses less digits than its factorization.

630311133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210103714.

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 630311133 is about 25105.9979486974. The cubic root of 630311133 is about 857.4029880023.

Adding to 630311133 its reverse (331113036), we get a palindrome (961424169).

The spelling of 630311133 in words is "six hundred thirty million, three hundred eleven thousand, one hundred thirty-three".