631340463 has 16 divisors (see below), whose sum is σ = 909297536. Its totient is φ = 387335520.

The previous prime is 631340461. The next prime is 631340477. The reversal of 631340463 is 364043136.

It is not a de Polignac number, because 631340463 - 2¹ = 631340461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 631340463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631340461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11545 + ... + 37362.

It is an arithmetic number, because the mean of its divisors is an integer number (56831096).

Almost surely, 2^631340463 is an apocalyptic number.

631340463 is a deficient number, since it is larger than the sum of its proper divisors (277957073).

631340463 is a wasteful number, since it uses less digits than its factorization.

631340463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49254.

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 631340463 is about 25126.4892692951. The cubic root of 631340463 is about 857.8694616691.

Adding to 631340463 its reverse (364043136), we get a palindrome (995383599).

The spelling of 631340463 in words is "six hundred thirty-one million, three hundred forty thousand, four hundred sixty-three".