2135831 has 2 divisors, whose sum is σ = 2135832. Its totient is φ = 2135830.

The previous prime is 2135797. The next prime is 2135851. The reversal of 2135831 is 1385312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2135831 - 2¹⁸ = 1873687 is a prime.

It is a super-2 number, since 2×2135831² = 9123548121122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2135797 and 2135806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2135851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067915 + 1067916.

It is an arithmetic number, because the mean of its divisors is an integer number (1067916).

2^2135831 is an apocalyptic number.

2135831 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135831 is an equidigital number, since it uses as much as digits as its factorization.

2135831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 23.

The square root of 2135831 is about 1461.4482543012. The cubic root of 2135831 is about 128.7821373258.

The spelling of 2135831 in words is "two million, one hundred thirty-five thousand, eight hundred thirty-one".