630048031 has 4 divisors (see below), whose sum is σ = 630764064. Its totient is φ = 629332000.

The previous prime is 630048017. The next prime is 630048091. The reversal of 630048031 is 130840036.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 630048031 - 2⁷ = 630047903 is a prime.

It is a super-2 number, since 2×630048031² = 793921042733953922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 630047987 and 630048005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630048091) 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, 356695 + ... + 358456.

It is an arithmetic number, because the mean of its divisors is an integer number (157691016).

Almost surely, 2^630048031 is an apocalyptic number.

630048031 is a deficient number, since it is larger than the sum of its proper divisors (716033).

630048031 is an equidigital number, since it uses as much as digits as its factorization.

630048031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716032.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 630048031 is about 25100.7575782087. The cubic root of 630048031 is about 857.2836734691.

Adding to 630048031 its reverse (130840036), we get a palindrome (760888067).

The spelling of 630048031 in words is "six hundred thirty million, forty-eight thousand, thirty-one".