31012241 has 8 divisors (see below), whose sum is σ = 33442920. Its totient is φ = 28588032.

The previous prime is 31012231. The next prime is 31012243. The reversal of 31012241 is 14221013.

It can be written as a sum of positive squares in 4 ways, for example, as 817216 + 30195025 = 904^2 + 5495^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31012241 - 2¹⁴ = 30995857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31012243) 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 7 ways as a sum of consecutive naturals, for example, 13955 + ... + 16023.

It is an arithmetic number, because the mean of its divisors is an integer number (4180365).

Almost surely, 2^31012241 is an apocalyptic number.

It is an amenable number.

31012241 is a deficient number, since it is larger than the sum of its proper divisors (2430679).

31012241 is a wasteful number, since it uses less digits than its factorization.

31012241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3235.

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

The square root of 31012241 is about 5568.8635285846. The cubic root of 31012241 is about 314.1794077986.

Adding to 31012241 its reverse (14221013), we get a palindrome (45233254).

The spelling of 31012241 in words is "thirty-one million, twelve thousand, two hundred forty-one".