631023201 has 12 divisors (see below), whose sum is σ = 918437520. Its totient is φ = 417470040.

The previous prime is 631023199. The next prime is 631023227. The reversal of 631023201 is 102320136.

631023201 is a `hidden beast` number, since 631 + 0 + 2 + 32 + 0 + 1 = 666.

It is not a de Polignac number, because 631023201 - 2¹ = 631023199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631023241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 266431 + ... + 268788.

It is an arithmetic number, because the mean of its divisors is an integer number (76536460).

Almost surely, 2^631023201 is an apocalyptic number.

It is an amenable number.

631023201 is a deficient number, since it is larger than the sum of its proper divisors (287414319).

631023201 is a wasteful number, since it uses less digits than its factorization.

631023201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535356 (or 535353 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 631023201 is about 25120.1751785293. The cubic root of 631023201 is about 857.7257383798.

Adding to 631023201 its reverse (102320136), we get a palindrome (733343337).

The spelling of 631023201 in words is "six hundred thirty-one million, twenty-three thousand, two hundred one".