31172341 has 4 divisors (see below), whose sum is σ = 31932684. Its totient is φ = 30412000.

The previous prime is 31172311. The next prime is 31172357. The reversal of 31172341 is 14327113.

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 12215025 + 18957316 = 3495^2 + 4354^2 .

It is a cyclic number.

It is not a de Polignac number, because 31172341 - 2¹⁵ = 31139573 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31172311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380110 + ... + 380191.

It is an arithmetic number, because the mean of its divisors is an integer number (7983171).

Almost surely, 2^31172341 is an apocalyptic number.

It is an amenable number.

31172341 is a deficient number, since it is larger than the sum of its proper divisors (760343).

31172341 is an equidigital number, since it uses as much as digits as its factorization.

31172341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760342.

The product of its digits is 504, while the sum is 22.

The square root of 31172341 is about 5583.2195908812. The cubic root of 31172341 is about 314.7191281500.

Adding to 31172341 its reverse (14327113), we get a palindrome (45499454).

It can be divided in two parts, 31172 and 341, that added together give a palindrome (31513).

The spelling of 31172341 in words is "thirty-one million, one hundred seventy-two thousand, three hundred forty-one".