631464023411 has 4 divisors (see below), whose sum is σ = 680038179072. Its totient is φ = 582889867752.

The previous prime is 631464023341. The next prime is 631464023429. The reversal of 631464023411 is 114320464136.

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-631464023411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631464023441) 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, 24287077811 + ... + 24287077836.

It is an arithmetic number, because the mean of its divisors is an integer number (170009544768).

Almost surely, 2^631464023411 is an apocalyptic number.

631464023411 is a deficient number, since it is larger than the sum of its proper divisors (48574155661).

631464023411 is a wasteful number, since it uses less digits than its factorization.

631464023411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48574155660.

The product of its (nonzero) digits is 41472, while the sum is 35.

Adding to 631464023411 its reverse (114320464136), we get a palindrome (745784487547).

The spelling of 631464023411 in words is "six hundred thirty-one billion, four hundred sixty-four million, twenty-three thousand, four hundred eleven".