31745743 has 2 divisors, whose sum is σ = 31745744. Its totient is φ = 31745742.

The previous prime is 31745719. The next prime is 31745759. The reversal of 31745743 is 34754713.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31745743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31745699 and 31745708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31742743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15872871 + 15872872.

It is an arithmetic number, because the mean of its divisors is an integer number (15872872).

Almost surely, 2^31745743 is an apocalyptic number.

31745743 is a deficient number, since it is larger than the sum of its proper divisors (1).

31745743 is an equidigital number, since it uses as much as digits as its factorization.

31745743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 34.

The square root of 31745743 is about 5634.3360744634. The cubic root of 31745743 is about 316.6371238675.

The spelling of 31745743 in words is "thirty-one million, seven hundred forty-five thousand, seven hundred forty-three".