743731 has 2 divisors, whose sum is σ = 743732. Its totient is φ = 743730.

The previous prime is 743711. The next prime is 743747. The reversal of 743731 is 137347.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 743731 - 2¹¹ = 741683 is a prime.

It is a super-2 number, since 2×743731² = 1106271600722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 743696 and 743705.

It is not a weakly prime, because it can be changed into another prime (743711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371865 + 371866.

It is an arithmetic number, because the mean of its divisors is an integer number (371866).

2⁷⁴³⁷³¹ is an apocalyptic number.

743731 is a deficient number, since it is larger than the sum of its proper divisors (1).

743731 is an equidigital number, since it uses as much as digits as its factorization.

743731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764, while the sum is 25.

The square root of 743731 is about 862.3983998130. The cubic root of 743731 is about 90.6021759407.

The spelling of 743731 in words is "seven hundred forty-three thousand, seven hundred thirty-one".