31040241 has 4 divisors (see below), whose sum is σ = 41386992. Its totient is φ = 20693492.

The previous prime is 31040231. The next prime is 31040293. The reversal of 31040241 is 14204013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14204013 = 3 ⋅4734671.

It is a cyclic number.

It is not a de Polignac number, because 31040241 - 2⁵ = 31040209 is a prime.

It is a super-2 number, since 2×31040241² = 1926993122676162, 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 31040241.

It is not an unprimeable number, because it can be changed into a prime (31040201) 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, 5173371 + ... + 5173376.

It is an arithmetic number, because the mean of its divisors is an integer number (10346748).

Almost surely, 2^31040241 is an apocalyptic number.

It is an amenable number.

31040241 is a deficient number, since it is larger than the sum of its proper divisors (10346751).

31040241 is a wasteful number, since it uses less digits than its factorization.

31040241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10346750.

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

The square root of 31040241 is about 5571.3769393212. The cubic root of 31040241 is about 314.2739336690.

Adding to 31040241 its reverse (14204013), we get a palindrome (45244254).

The spelling of 31040241 in words is "thirty-one million, forty thousand, two hundred forty-one".