31244201 has 4 divisors (see below), whose sum is σ = 31256400. Its totient is φ = 31232004.

The previous prime is 31244183. The next prime is 31244203. The reversal of 31244201 is 10244213.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10244213 = 7 ⋅1463459.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31244201 is a prime.

It is a super-2 number, since 2×31244201² = 1952400192256802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31244201.

It is not an unprimeable number, because it can be changed into a prime (31244203) 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, 611 + ... + 7928.

It is an arithmetic number, because the mean of its divisors is an integer number (7814100).

Almost surely, 2^31244201 is an apocalyptic number.

It is an amenable number.

31244201 is a deficient number, since it is larger than the sum of its proper divisors (12199).

31244201 is an equidigital number, since it uses as much as digits as its factorization.

31244201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12198.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 31244201 is about 5589.6512413567. The cubic root of 31244201 is about 314.9607778493.

Adding to 31244201 its reverse (10244213), we get a palindrome (41488414).

The spelling of 31244201 in words is "thirty-one million, two hundred forty-four thousand, two hundred one".