31406699 has 2 divisors, whose sum is σ = 31406700. Its totient is φ = 31406698.

The previous prime is 31406659. The next prime is 31406731. The reversal of 31406699 is 99660413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31406699 - 2⁸ = 31406443 is a prime.

It is not a weakly prime, because it can be changed into another prime (31406629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15703349 + 15703350.

It is an arithmetic number, because the mean of its divisors is an integer number (15703350).

Almost surely, 2^31406699 is an apocalyptic number.

31406699 is a deficient number, since it is larger than the sum of its proper divisors (1).

31406699 is an equidigital number, since it uses as much as digits as its factorization.

31406699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 31406699 is about 5604.1680024782. The cubic root of 31406699 is about 315.5058605857.

The spelling of 31406699 in words is "thirty-one million, four hundred six thousand, six hundred ninety-nine".