2471531 has 2 divisors, whose sum is σ = 2471532. Its totient is φ = 2471530.

The previous prime is 2471527. The next prime is 2471533. The reversal of 2471531 is 1351742.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2471531 - 2² = 2471527 is a prime.

It is a super-2 number, since 2×2471531² = 12216930967922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2471533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2471497 and 2471506.

It is not a weakly prime, because it can be changed into another prime (2471533) 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, 1235765 + 1235766.

It is an arithmetic number, because the mean of its divisors is an integer number (1235766).

2^2471531 is an apocalyptic number.

2471531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2471531 is an equidigital number, since it uses as much as digits as its factorization.

2471531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 23.

The square root of 2471531 is about 1572.1103650826. The cubic root of 2471531 is about 135.2037344475.

The spelling of 2471531 in words is "two million, four hundred seventy-one thousand, five hundred thirty-one".