440342631 has 12 divisors (see below), whose sum is σ = 656568640. Its totient is φ = 284091840.

The previous prime is 440342627. The next prime is 440342633. The reversal of 440342631 is 136243044.

It is not a de Polignac number, because 440342631 - 2² = 440342627 is a prime.

It is a super-2 number, since 2×440342631² = 387803265352004322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 440342595 and 440342604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440342633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 788866 + ... + 789423.

Almost surely, 2^440342631 is an apocalyptic number.

440342631 is a deficient number, since it is larger than the sum of its proper divisors (216226009).

440342631 is a wasteful number, since it uses less digits than its factorization.

440342631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578326 (or 1578323 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 440342631 is about 20984.3425200791. The cubic root of 440342631 is about 760.7878665962.

Adding to 440342631 its reverse (136243044), we get a palindrome (576585675).

It can be divided in two parts, 44034 and 2631, that added together give a triangular number (46665 = T₃₀₅).

The spelling of 440342631 in words is "four hundred forty million, three hundred forty-two thousand, six hundred thirty-one".