631198327 has 2 divisors, whose sum is σ = 631198328. Its totient is φ = 631198326.

The previous prime is 631198313. The next prime is 631198331. The reversal of 631198327 is 723891136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631198327 - 2¹⁵ = 631165559 is a prime.

It is a super-2 number, since 2×631198327² = 796822656015197858, 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 631198327.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631198367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315599163 + 315599164.

It is an arithmetic number, because the mean of its divisors is an integer number (315599164).

Almost surely, 2^631198327 is an apocalyptic number.

631198327 is a deficient number, since it is larger than the sum of its proper divisors (1).

631198327 is an equidigital number, since it uses as much as digits as its factorization.

631198327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 631198327 is about 25123.6607006224. The cubic root of 631198327 is about 857.8050784018.

The spelling of 631198327 in words is "six hundred thirty-one million, one hundred ninety-eight thousand, three hundred twenty-seven".