1283831 has 2 divisors, whose sum is σ = 1283832. Its totient is φ = 1283830.

The previous prime is 1283797. The next prime is 1283839. The reversal of 1283831 is 1383821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1283831 - 2⁶ = 1283767 is a prime.

It is a super-2 number, since 2×1283831² = 3296444073122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1283831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1283839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641915 + 641916.

It is an arithmetic number, because the mean of its divisors is an integer number (641916).

2^1283831 is an apocalyptic number.

1283831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283831 is an equidigital number, since it uses as much as digits as its factorization.

1283831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 1283831 is about 1133.0626637570. The cubic root of 1283831 is about 108.6849190028.

The spelling of 1283831 in words is "one million, two hundred eighty-three thousand, eight hundred thirty-one".