31928041 has 2 divisors, whose sum is σ = 31928042. Its totient is φ = 31928040.

The previous prime is 31928033. The next prime is 31928069. The reversal of 31928041 is 14082913.

31928041 = 3995² + 3996².

It is a happy number.

It is an a-pointer prime, because the next prime (31928069) can be obtained adding 31928041 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15968016 + 15960025 = 3996^2 + 3995^2 .

It is a cyclic number.

It is not a de Polignac number, because 31928041 - 2³ = 31928033 is a prime.

It is not a weakly prime, because it can be changed into another prime (31928011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15964020 + 15964021.

It is an arithmetic number, because the mean of its divisors is an integer number (15964021).

Almost surely, 2^31928041 is an apocalyptic number.

31928041 is the 3996-th centered square number.

It is an amenable number.

31928041 is a deficient number, since it is larger than the sum of its proper divisors (1).

31928041 is an equidigital number, since it uses as much as digits as its factorization.

31928041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 31928041 is about 5650.4903327056. The cubic root of 31928041 is about 317.2420572239.

The spelling of 31928041 in words is "thirty-one million, nine hundred twenty-eight thousand, forty-one".