1000442031 has 4 divisors (see below), whose sum is σ = 1333922712. Its totient is φ = 666961352.

The previous prime is 1000442021. The next prime is 1000442059. The reversal of 1000442031 is 1302440001.

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 1000442031 - 2¹³ = 1000433839 is a prime.

It is a super-2 number, since 2×1000442031² = 2001768514782809922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1000442031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000442011) 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, 166740336 + ... + 166740341.

It is an arithmetic number, because the mean of its divisors is an integer number (333480678).

Almost surely, 2^1000442031 is an apocalyptic number.

1000442031 is a deficient number, since it is larger than the sum of its proper divisors (333480681).

1000442031 is an equidigital number, since it uses as much as digits as its factorization.

1000442031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333480680.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1000442031 is about 31629.7649532841. The cubic root of 1000442031 is about 1000.1473219618.

Adding to 1000442031 its reverse (1302440001), we get a palindrome (2302882032).

The spelling of 1000442031 in words is "one billion, four hundred forty-two thousand, thirty-one".