7881453131 has 2 divisors, whose sum is σ = 7881453132. Its totient is φ = 7881453130.

The previous prime is 7881453121. The next prime is 7881453133. The reversal of 7881453131 is 1313541887.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7881453131 - 2¹⁰ = 7881452107 is a prime.

It is a super-2 number, since 2×7881453131² (a number of 21 digits) contains 22 as substring.

Together with 7881453133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7881453133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3940726565 + 3940726566.

It is an arithmetic number, because the mean of its divisors is an integer number (3940726566).

Almost surely, 2^7881453131 is an apocalyptic number.

7881453131 is a deficient number, since it is larger than the sum of its proper divisors (1).

7881453131 is an equidigital number, since it uses as much as digits as its factorization.

7881453131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 41.

The square root of 7881453131 is about 88777.5485750761. The cubic root of 7881453131 is about 1990.0718921360.

The spelling of 7881453131 in words is "seven billion, eight hundred eighty-one million, four hundred fifty-three thousand, one hundred thirty-one".