631400417 has 4 divisors (see below), whose sum is σ = 668541636. Its totient is φ = 594259200.

The previous prime is 631400401. The next prime is 631400431. The reversal of 631400417 is 714004136.

631400417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 459502096 + 171898321 = 21436^2 + 13111^2 .

It is a cyclic number.

It is not a de Polignac number, because 631400417 - 2⁴ = 631400401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631400437) 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, 18570584 + ... + 18570617.

It is an arithmetic number, because the mean of its divisors is an integer number (167135409).

Almost surely, 2^631400417 is an apocalyptic number.

It is an amenable number.

631400417 is a deficient number, since it is larger than the sum of its proper divisors (37141219).

631400417 is a wasteful number, since it uses less digits than its factorization.

631400417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37141218.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 631400417 is about 25127.6822846836. The cubic root of 631400417 is about 857.8966161026.

The spelling of 631400417 in words is "six hundred thirty-one million, four hundred thousand, four hundred seventeen".