1000013031 has 24 divisors (see below), whose sum is σ = 1509530880. Its totient is φ = 637304976.

The previous prime is 1000013029. The next prime is 1000013039. The reversal of 1000013031 is 1303100001.

It is not a de Polignac number, because 1000013031 - 2¹ = 1000013029 is a prime.

It is a super-2 number, since 2×1000013031² = 2000052124339613922, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000013039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9301 + ... + 45678.

It is an arithmetic number, because the mean of its divisors is an integer number (62897120).

Almost surely, 2^1000013031 is an apocalyptic number.

1000013031 is a deficient number, since it is larger than the sum of its proper divisors (509517849).

1000013031 is a wasteful number, since it uses less digits than its factorization.

1000013031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55075 (or 55072 counting only the distinct ones).

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

The square root of 1000013031 is about 31622.9826392135. The cubic root of 1000013031 is about 1000.0043436478.

Adding to 1000013031 its reverse (1303100001), we get a palindrome (2303113032).

The spelling of 1000013031 in words is "one billion, thirteen thousand, thirty-one".