631623463 has 4 divisors (see below), whose sum is σ = 641978008. Its totient is φ = 621268920.

The previous prime is 631623437. The next prime is 631623511. The reversal of 631623463 is 364326136.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631623463 is a prime.

It is a super-2 number, since 2×631623463² = 797896398024224738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631603463) 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 3 ways as a sum of consecutive naturals, for example, 5177181 + ... + 5177302.

It is an arithmetic number, because the mean of its divisors is an integer number (160494502).

Almost surely, 2^631623463 is an apocalyptic number.

631623463 is a deficient number, since it is larger than the sum of its proper divisors (10354545).

631623463 is a wasteful number, since it uses less digits than its factorization.

631623463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10354544.

The product of its digits is 46656, while the sum is 34.

The square root of 631623463 is about 25132.1201453439. The cubic root of 631623463 is about 857.9976232585.

Adding to 631623463 its reverse (364326136), we get a palindrome (995949599).

The spelling of 631623463 in words is "six hundred thirty-one million, six hundred twenty-three thousand, four hundred sixty-three".