31434743 has 2 divisors, whose sum is σ = 31434744. Its totient is φ = 31434742.

The previous prime is 31434731. The next prime is 31434757. The reversal of 31434743 is 34743413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31434743 - 2¹⁰ = 31433719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31434443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15717371 + 15717372.

It is an arithmetic number, because the mean of its divisors is an integer number (15717372).

Almost surely, 2^31434743 is an apocalyptic number.

31434743 is a deficient number, since it is larger than the sum of its proper divisors (1).

31434743 is an equidigital number, since it uses as much as digits as its factorization.

31434743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 29.

The square root of 31434743 is about 5606.6695105026. The cubic root of 31434743 is about 315.5997409188.

The spelling of 31434743 in words is "thirty-one million, four hundred thirty-four thousand, seven hundred forty-three".