31004043 has 16 divisors (see below), whose sum is σ = 48020736. Its totient is φ = 17425440.

The previous prime is 31004041. The next prime is 31004047. The reversal of 31004043 is 34040013.

It is not a de Polignac number, because 31004043 - 2¹ = 31004041 is a prime.

It is a super-2 number, since 2×31004043² = 1922501364691698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31004041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10821 + ... + 13382.

It is an arithmetic number, because the mean of its divisors is an integer number (3001296).

Almost surely, 2^31004043 is an apocalyptic number.

31004043 is a deficient number, since it is larger than the sum of its proper divisors (17016693).

31004043 is a wasteful number, since it uses less digits than its factorization.

31004043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24274.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 31004043 is about 5568.1274231109. The cubic root of 31004043 is about 314.1517212068.

Adding to 31004043 its reverse (34040013), we get a palindrome (65044056).

The spelling of 31004043 in words is "thirty-one million, four thousand, forty-three".