1000040031 has 12 divisors (see below), whose sum is σ = 1494313080. Its totient is φ = 643703760.

The previous prime is 1000040017. The next prime is 1000040059. The reversal of 1000040031 is 1300400001.

It is not a de Polignac number, because 1000040031 - 2⁷ = 1000039903 is a prime.

It is a super-2 number, since 2×1000040031² = 2000160127204961922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1000039995 and 1000040022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000040071) 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, 1915525 + ... + 1916046.

It is an arithmetic number, because the mean of its divisors is an integer number (124526090).

Almost surely, 2^1000040031 is an apocalyptic number.

1000040031 is a deficient number, since it is larger than the sum of its proper divisors (494273049).

1000040031 is a wasteful number, since it uses less digits than its factorization.

1000040031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3831606 (or 3831603 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1000040031 is about 31623.4095410346. The cubic root of 1000040031 is about 1000.0133434886.

Adding to 1000040031 its reverse (1300400001), we get a palindrome (2300440032).

The spelling of 1000040031 in words is "one billion, forty thousand, thirty-one".