31042441 has 4 divisors (see below), whose sum is σ = 32112900. Its totient is φ = 29971984.

The previous prime is 31042421. The next prime is 31042457. The reversal of 31042441 is 14424013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14424013 = 23 ⋅627131.

It can be written as a sum of positive squares in 2 ways, for example, as 15832441 + 15210000 = 3979^2 + 3900^2 .

It is a cyclic number.

It is not a de Polignac number, because 31042441 - 2⁹ = 31041929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31042421) 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, 535186 + ... + 535243.

It is an arithmetic number, because the mean of its divisors is an integer number (8028225).

Almost surely, 2^31042441 is an apocalyptic number.

It is an amenable number.

31042441 is a deficient number, since it is larger than the sum of its proper divisors (1070459).

31042441 is a wasteful number, since it uses less digits than its factorization.

31042441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070458.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 31042441 is about 5571.5743735501. The cubic root of 31042441 is about 314.2813582926.

Adding to 31042441 its reverse (14424013), we get a palindrome (45466454).

The spelling of 31042441 in words is "thirty-one million, forty-two thousand, four hundred forty-one".