630431011 has 6 divisors (see below), whose sum is σ = 733358580. Its totient is φ = 540369396.

The previous prime is 630431003. The next prime is 630431017. The reversal of 630431011 is 110134036.

630431011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 630431011 - 2³ = 630431003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 630431011.

It is not an unprimeable number, because it can be changed into a prime (630431017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6432921 + ... + 6433018.

It is an arithmetic number, because the mean of its divisors is an integer number (122226430).

Almost surely, 2^630431011 is an apocalyptic number.

630431011 is a deficient number, since it is larger than the sum of its proper divisors (102927569).

630431011 is a wasteful number, since it uses less digits than its factorization.

630431011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12865953 (or 12865946 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 630431011 is about 25108.3852726534. The cubic root of 630431011 is about 857.4573406516.

Adding to 630431011 its reverse (110134036), we get a palindrome (740565047).

The spelling of 630431011 in words is "six hundred thirty million, four hundred thirty-one thousand, eleven".