631628203 has 2 divisors, whose sum is σ = 631628204. Its totient is φ = 631628202.

The previous prime is 631628201. The next prime is 631628213. The reversal of 631628203 is 302826136.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 631628203 - 2¹ = 631628201 is a prime.

Together with 631628201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (631628201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315814101 + 315814102.

It is an arithmetic number, because the mean of its divisors is an integer number (315814102).

Almost surely, 2^631628203 is an apocalyptic number.

631628203 is a deficient number, since it is larger than the sum of its proper divisors (1).

631628203 is an equidigital number, since it uses as much as digits as its factorization.

631628203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 631628203 is about 25132.2144468011. The cubic root of 631628203 is about 857.9997695259. Note that the first 3 decimals are identical.

The spelling of 631628203 in words is "six hundred thirty-one million, six hundred twenty-eight thousand, two hundred three".