1355831 has 2 divisors, whose sum is σ = 1355832. Its totient is φ = 1355830.

The previous prime is 1355819. The next prime is 1355843. The reversal of 1355831 is 1385531.

It is a balanced prime because it is at equal distance from previous prime (1355819) and next prime (1355843).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1355831 is a prime.

It is a super-2 number, since 2×1355831² = 3676555401122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1355831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1355881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677915 + 677916.

It is an arithmetic number, because the mean of its divisors is an integer number (677916).

2^1355831 is an apocalyptic number.

1355831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355831 is an equidigital number, since it uses as much as digits as its factorization.

1355831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 26.

The square root of 1355831 is about 1164.4015630357. The cubic root of 1355831 is about 110.6798392813.

The spelling of 1355831 in words is "one million, three hundred fifty-five thousand, eight hundred thirty-one".