2731124947 has 2 divisors, whose sum is σ = 2731124948. Its totient is φ = 2731124946.

The previous prime is 2731124917. The next prime is 2731125011. The reversal of 2731124947 is 7494211372.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2731124947 - 2¹¹ = 2731122899 is a prime.

It is a super-2 number, since 2×2731124947² = 14918086952251505618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2731124917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1365562473 + 1365562474.

It is an arithmetic number, because the mean of its divisors is an integer number (1365562474).

Almost surely, 2^2731124947 is an apocalyptic number.

2731124947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2731124947 is an equidigital number, since it uses as much as digits as its factorization.

2731124947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 40.

The square root of 2731124947 is about 52260.1659679722. The cubic root of 2731124947 is about 1397.8069315375.

The spelling of 2731124947 in words is "two billion, seven hundred thirty-one million, one hundred twenty-four thousand, nine hundred forty-seven".