630450431 has 4 divisors (see below), whose sum is σ = 678946632. Its totient is φ = 581954232.

The previous prime is 630450421. The next prime is 630450449. The reversal of 630450431 is 134054036.

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 630450431 - 2¹⁴ = 630434047 is a prime.

It is a super-2 number, since 2×630450431² = 794935491896171522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 630450431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630450421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24248081 + ... + 24248106.

It is an arithmetic number, because the mean of its divisors is an integer number (169736658).

Almost surely, 2^630450431 is an apocalyptic number.

630450431 is a deficient number, since it is larger than the sum of its proper divisors (48496201).

630450431 is a wasteful number, since it uses less digits than its factorization.

630450431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48496200.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 630450431 is about 25108.7719930705. The cubic root of 630450431 is about 857.4661450253.

The spelling of 630450431 in words is "six hundred thirty million, four hundred fifty thousand, four hundred thirty-one".