631243027 has 4 divisors (see below), whose sum is σ = 658688400. Its totient is φ = 603797656.

The previous prime is 631243021. The next prime is 631243033. The reversal of 631243027 is 720342136.

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

It is an interprime number because it is at equal distance from previous prime (631243021) and next prime (631243033).

It is a de Polignac number, because none of the positive numbers 2^k-631243027 is a prime.

It is a super-2 number, since 2×631243027² = 796935518272245458, 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 = 631242986 and 631243004.

It is not an unprimeable number, because it can be changed into a prime (631243021) 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, 13722652 + ... + 13722697.

It is an arithmetic number, because the mean of its divisors is an integer number (164672100).

Almost surely, 2^631243027 is an apocalyptic number.

631243027 is a deficient number, since it is larger than the sum of its proper divisors (27445373).

631243027 is a wasteful number, since it uses less digits than its factorization.

631243027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27445372.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 631243027 is about 25124.5502845325. The cubic root of 631243027 is about 857.8253271785.

The spelling of 631243027 in words is "six hundred thirty-one million, two hundred forty-three thousand, twenty-seven".