1283731 has 2 divisors, whose sum is σ = 1283732. Its totient is φ = 1283730.

The previous prime is 1283719. The next prime is 1283753. The reversal of 1283731 is 1373821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1283731 - 2⁷ = 1283603 is a prime.

It is a super-2 number, since 2×1283731² = 3295930560722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1283696 and 1283705.

It is not a weakly prime, because it can be changed into another prime (1283701) 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, 641865 + 641866.

It is an arithmetic number, because the mean of its divisors is an integer number (641866).

2^1283731 is an apocalyptic number.

1283731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283731 is an equidigital number, since it uses as much as digits as its factorization.

1283731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 1283731 is about 1133.0185347116. The cubic root of 1283731 is about 108.6820970389.

The spelling of 1283731 in words is "one million, two hundred eighty-three thousand, seven hundred thirty-one".