631401423 has 8 divisors (see below), whose sum is σ = 855669936. Its totient is φ = 414033600.

The previous prime is 631401413. The next prime is 631401439. The reversal of 631401423 is 324104136.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 631401423 - 2⁵ = 631401391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 631401393 and 631401402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631401413) 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 7 ways as a sum of consecutive naturals, for example, 1724958 + ... + 1725323.

It is an arithmetic number, because the mean of its divisors is an integer number (106958742).

Almost surely, 2^631401423 is an apocalyptic number.

631401423 is a deficient number, since it is larger than the sum of its proper divisors (224268513).

631401423 is a wasteful number, since it uses less digits than its factorization.

631401423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450345.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 631401423 is about 25127.7023024390. The cubic root of 631401423 is about 857.8970717266.

Adding to 631401423 its reverse (324104136), we get a palindrome (955505559).

The spelling of 631401423 in words is "six hundred thirty-one million, four hundred one thousand, four hundred twenty-three".