31466749 has 2 divisors, whose sum is σ = 31466750. Its totient is φ = 31466748.

The previous prime is 31466731. The next prime is 31466753. The reversal of 31466749 is 94766413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31158724 + 308025 = 5582^2 + 555^2 .

It is a cyclic number.

It is not a de Polignac number, because 31466749 - 2¹¹ = 31464701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31466719) 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 as a sum of consecutive naturals, namely, 15733374 + 15733375.

It is an arithmetic number, because the mean of its divisors is an integer number (15733375).

Almost surely, 2^31466749 is an apocalyptic number.

It is an amenable number.

31466749 is a deficient number, since it is larger than the sum of its proper divisors (1).

31466749 is an equidigital number, since it uses as much as digits as its factorization.

31466749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 31466749 is about 5609.5230635055. The cubic root of 31466749 is about 315.7068162763.

The spelling of 31466749 in words is "thirty-one million, four hundred sixty-six thousand, seven hundred forty-nine".