440340031 has 12 divisors (see below), whose sum is σ = 457860312. Its totient is φ = 423467744.

The previous prime is 440340023. The next prime is 440340091. The reversal of 440340031 is 130043044.

It is not a de Polignac number, because 440340031 - 2³ = 440340023 is a prime.

It is a super-2 number, since 2×440340031² = 387798685802161922, 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 = 440339990 and 440340008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440340091) 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, 245520 + ... + 247306.

It is an arithmetic number, because the mean of its divisors is an integer number (38155026).

Almost surely, 2^440340031 is an apocalyptic number.

440340031 is a deficient number, since it is larger than the sum of its proper divisors (17520281).

440340031 is a wasteful number, since it uses less digits than its factorization.

440340031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138 (or 2109 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 440340031 is about 20984.2805690355. The cubic root of 440340031 is about 760.7863692377.

Adding to 440340031 its reverse (130043044), we get a palindrome (570383075).

The spelling of 440340031 in words is "four hundred forty million, three hundred forty thousand, thirty-one".