631103443 has 4 divisors (see below), whose sum is σ = 635283088. Its totient is φ = 626923800.

The previous prime is 631103399. The next prime is 631103533. The reversal of 631103443 is 344301136.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 631103443 - 2¹⁷ = 630972371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631193443) 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, 2089596 + ... + 2089897.

It is an arithmetic number, because the mean of its divisors is an integer number (158820772).

Almost surely, 2^631103443 is an apocalyptic number.

631103443 is a deficient number, since it is larger than the sum of its proper divisors (4179645).

631103443 is a wasteful number, since it uses less digits than its factorization.

631103443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4179644.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 631103443 is about 25121.7722901869. The cubic root of 631103443 is about 857.7620934675.

Adding to 631103443 its reverse (344301136), we get a palindrome (975404579).

The spelling of 631103443 in words is "six hundred thirty-one million, one hundred three thousand, four hundred forty-three".