31100441 has 4 divisors (see below), whose sum is σ = 32172900. Its totient is φ = 30027984.

The previous prime is 31100411. The next prime is 31100449. The reversal of 31100441 is 14400113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5900041 + 25200400 = 2429^2 + 5020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31100441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31100449) 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 3 ways as a sum of consecutive naturals, for example, 536186 + ... + 536243.

It is an arithmetic number, because the mean of its divisors is an integer number (8043225).

Almost surely, 2^31100441 is an apocalyptic number.

It is an amenable number.

31100441 is a deficient number, since it is larger than the sum of its proper divisors (1072459).

31100441 is a wasteful number, since it uses less digits than its factorization.

31100441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072458.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 31100441 is about 5576.7769365468. The cubic root of 31100441 is about 314.4769719676.

Adding to 31100441 its reverse (14400113), we get a palindrome (45500554).

The spelling of 31100441 in words is "thirty-one million, one hundred thousand, four hundred forty-one".