31925743 has 2 divisors, whose sum is σ = 31925744. Its totient is φ = 31925742.

The previous prime is 31925741. The next prime is 31925749. The reversal of 31925743 is 34752913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31925743 - 2¹ = 31925741 is a prime.

It is a super-2 number, since 2×31925743² = 2038506132204098, which contains 22 as substring.

Together with 31925741, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 31925699 and 31925708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31925741) 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, 15962871 + 15962872.

It is an arithmetic number, because the mean of its divisors is an integer number (15962872).

Almost surely, 2^31925743 is an apocalyptic number.

31925743 is a deficient number, since it is larger than the sum of its proper divisors (1).

31925743 is an equidigital number, since it uses as much as digits as its factorization.

31925743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 31925743 is about 5650.2869838620. The cubic root of 31925743 is about 317.2344459443.

It can be divided in two parts, 319 and 25743, that added together give a palindrome (26062).

The spelling of 31925743 in words is "thirty-one million, nine hundred twenty-five thousand, seven hundred forty-three".