31493467 has 2 divisors, whose sum is σ = 31493468. Its totient is φ = 31493466.

The previous prime is 31493447. The next prime is 31493477. The reversal of 31493467 is 76439413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31493467 - 2⁷ = 31493339 is a prime.

It is not a weakly prime, because it can be changed into another prime (31493447) 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, 15746733 + 15746734.

It is an arithmetic number, because the mean of its divisors is an integer number (15746734).

Almost surely, 2^31493467 is an apocalyptic number.

31493467 is a deficient number, since it is larger than the sum of its proper divisors (1).

31493467 is an equidigital number, since it uses as much as digits as its factorization.

31493467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 37.

The square root of 31493467 is about 5611.9040440834. The cubic root of 31493467 is about 315.7961451578.

The spelling of 31493467 in words is "thirty-one million, four hundred ninety-three thousand, four hundred sixty-seven".