2506831 has 2 divisors, whose sum is σ = 2506832. Its totient is φ = 2506830.

The previous prime is 2506813. The next prime is 2506843. The reversal of 2506831 is 1386052.

It is a happy number.

Together with previous prime (2506813) 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 2506831 - 2⁵ = 2506799 is a prime.

It is a super-2 number, since 2×2506831² = 12568403325122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2506796 and 2506805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2506631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253415 + 1253416.

It is an arithmetic number, because the mean of its divisors is an integer number (1253416).

2^2506831 is an apocalyptic number.

2506831 is a deficient number, since it is larger than the sum of its proper divisors (1).

2506831 is an equidigital number, since it uses as much as digits as its factorization.

2506831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2506831 is about 1583.2975083666. The cubic root of 2506831 is about 135.8443829904.

The spelling of 2506831 in words is "two million, five hundred six thousand, eight hundred thirty-one".