1292831 has 2 divisors, whose sum is σ = 1292832. Its totient is φ = 1292830.

The previous prime is 1292813. The next prime is 1292843. The reversal of 1292831 is 1382921.

Together with previous prime (1292813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1292831 - 2¹⁴ = 1276447 is a prime.

It is a super-2 number, since 2×1292831² = 3342823989122, 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 1292831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1292801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646415 + 646416.

It is an arithmetic number, because the mean of its divisors is an integer number (646416).

2^1292831 is an apocalyptic number.

1292831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1292831 is an equidigital number, since it uses as much as digits as its factorization.

1292831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 26.

The square root of 1292831 is about 1137.0272644049. The cubic root of 1292831 is about 108.9382979912.

The spelling of 1292831 in words is "one million, two hundred ninety-two thousand, eight hundred thirty-one".