2870831 has 2 divisors, whose sum is σ = 2870832. Its totient is φ = 2870830.

The previous prime is 2870821. The next prime is 2870839. The reversal of 2870831 is 1380782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2870831 - 2¹⁰ = 2869807 is a prime.

It is a super-2 number, since 2×2870831² = 16483341261122, 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 = 2870794 and 2870803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2870839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1435415 + 1435416.

It is an arithmetic number, because the mean of its divisors is an integer number (1435416).

2^2870831 is an apocalyptic number.

2870831 is a deficient number, since it is larger than the sum of its proper divisors (1).

2870831 is an equidigital number, since it uses as much as digits as its factorization.

2870831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 2870831 is about 1694.3526787537. The cubic root of 2870831 is about 142.1245848370.

The spelling of 2870831 in words is "two million, eight hundred seventy thousand, eight hundred thirty-one".