31013241 has 16 divisors (see below), whose sum is σ = 47472000. Its totient is φ = 17641728.

The previous prime is 31013239. The next prime is 31013249. The reversal of 31013241 is 14231013.

It is not a de Polignac number, because 31013241 - 2¹ = 31013239 is a prime.

It is a super-2 number, since 2×31013241² = 1923642234648162, 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 31013241.

It is not an unprimeable number, because it can be changed into a prime (31013249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1585 + ... + 8033.

It is an arithmetic number, because the mean of its divisors is an integer number (2967000).

Almost surely, 2^31013241 is an apocalyptic number.

It is an amenable number.

31013241 is a deficient number, since it is larger than the sum of its proper divisors (16458759).

31013241 is a wasteful number, since it uses less digits than its factorization.

31013241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6688.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 31013241 is about 5568.9533127869. The cubic root of 31013241 is about 314.1827847020.

Adding to 31013241 its reverse (14231013), we get a palindrome (45244254).

The spelling of 31013241 in words is "thirty-one million, thirteen thousand, two hundred forty-one".