440142031 has 8 divisors (see below), whose sum is σ = 505548800. Its totient is φ = 375367608.

The previous prime is 440141983. The next prime is 440142041. The reversal of 440142031 is 130241044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 440142031 - 2²¹ = 438044879 is a prime.

It is a super-2 number, since 2×440142031² = 387450014905609922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440142041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156591 + ... + 159376.

It is an arithmetic number, because the mean of its divisors is an integer number (63193600).

Almost surely, 2^440142031 is an apocalyptic number.

440142031 is a deficient number, since it is larger than the sum of its proper divisors (65406769).

440142031 is a wasteful number, since it uses less digits than its factorization.

440142031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316173.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 440142031 is about 20979.5622213620. The cubic root of 440142031 is about 760.6723223088.

Adding to 440142031 its reverse (130241044), we get a palindrome (570383075).

The spelling of 440142031 in words is "four hundred forty million, one hundred forty-two thousand, thirty-one".