631107897 has 24 divisors (see below), whose sum is σ = 983225376. Its totient is φ = 359025408.

The previous prime is 631107871. The next prime is 631107913. The reversal of 631107897 is 798701136.

It is not a de Polignac number, because 631107897 - 2¹⁶ = 631042361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (631107397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23913 + ... + 42825.

It is an arithmetic number, because the mean of its divisors is an integer number (40967724).

Almost surely, 2^631107897 is an apocalyptic number.

It is an amenable number.

631107897 is a deficient number, since it is larger than the sum of its proper divisors (352117479).

631107897 is a wasteful number, since it uses less digits than its factorization.

631107897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19157 (or 19150 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 631107897 is about 25121.8609382347. The cubic root of 631107897 is about 857.7641113424.

The spelling of 631107897 in words is "six hundred thirty-one million, one hundred seven thousand, eight hundred ninety-seven".