31494943 has 2 divisors, whose sum is σ = 31494944. Its totient is φ = 31494942.

The previous prime is 31494937. The next prime is 31494949. The reversal of 31494943 is 34949413.

It is a balanced prime because it is at equal distance from previous prime (31494937) and next prime (31494949).

It is a cyclic number.

It is not a de Polignac number, because 31494943 - 2⁹ = 31494431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31494949) 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, 15747471 + 15747472.

It is an arithmetic number, because the mean of its divisors is an integer number (15747472).

Almost surely, 2^31494943 is an apocalyptic number.

31494943 is a deficient number, since it is larger than the sum of its proper divisors (1).

31494943 is an equidigital number, since it uses as much as digits as its factorization.

31494943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 37.

The square root of 31494943 is about 5612.0355487114. The cubic root of 31494943 is about 315.8010785389.

The spelling of 31494943 in words is "thirty-one million, four hundred ninety-four thousand, nine hundred forty-three".