31280041 has 6 divisors (see below), whose sum is σ = 33871470. Its totient is φ = 28873728.

The previous prime is 31280033. The next prime is 31280047. The reversal of 31280041 is 14008213.

It can be written as a sum of positive squares in 3 ways, for example, as 143641 + 31136400 = 379^2 + 5580^2 .

It is not a de Polignac number, because 31280041 - 2³ = 31280033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31280047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92376 + ... + 92713.

It is an arithmetic number, because the mean of its divisors is an integer number (5645245).

Almost surely, 2^31280041 is an apocalyptic number.

It is an amenable number.

31280041 is a deficient number, since it is larger than the sum of its proper divisors (2591429).

31280041 is a wasteful number, since it uses less digits than its factorization.

31280041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185115 (or 185102 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 31280041 is about 5592.8562470351. The cubic root of 31280041 is about 315.0811615841.

Adding to 31280041 its reverse (14008213), we get a palindrome (45288254).

The spelling of 31280041 in words is "thirty-one million, two hundred eighty thousand, forty-one".