31068461 has 2 divisors, whose sum is σ = 31068462. Its totient is φ = 31068460.

The previous prime is 31068451. The next prime is 31068467. The reversal of 31068461 is 16486013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27144100 + 3924361 = 5210^2 + 1981^2 .

It is an emirp because it is prime and its reverse (16486013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31068461 - 2²² = 26874157 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31068467) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15534230 + 15534231.

It is an arithmetic number, because the mean of its divisors is an integer number (15534231).

Almost surely, 2^31068461 is an apocalyptic number.

It is an amenable number.

31068461 is a deficient number, since it is larger than the sum of its proper divisors (1).

31068461 is an equidigital number, since it uses as much as digits as its factorization.

31068461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 31068461 is about 5573.9089515348. The cubic root of 31068461 is about 314.3691447435.

The spelling of 31068461 in words is "thirty-one million, sixty-eight thousand, four hundred sixty-one".