31044121 has 4 divisors (see below), whose sum is σ = 31267600. Its totient is φ = 30820644.

The previous prime is 31044109. The next prime is 31044133. The reversal of 31044121 is 12144013.

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.

It is an interprime number because it is at equal distance from previous prime (31044109) and next prime (31044133).

It is a cyclic number.

It is not a de Polignac number, because 31044121 - 2⁷ = 31043993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31044095 and 31044104.

It is not an unprimeable number, because it can be changed into a prime (31044191) 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, 111531 + ... + 111808.

It is an arithmetic number, because the mean of its divisors is an integer number (7816900).

Almost surely, 2^31044121 is an apocalyptic number.

It is an amenable number.

31044121 is a deficient number, since it is larger than the sum of its proper divisors (223479).

31044121 is a wasteful number, since it uses less digits than its factorization.

31044121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223478.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 31044121 is about 5571.7251367956. The cubic root of 31044121 is about 314.2870277690.

Adding to 31044121 its reverse (12144013), we get a palindrome (43188134).

It can be divided in two parts, 3104 and 4121, that added together give a square (7225 = 85²).

The spelling of 31044121 in words is "thirty-one million, forty-four thousand, one hundred twenty-one".