1248816131 has 2 divisors, whose sum is σ = 1248816132. Its totient is φ = 1248816130.

The previous prime is 1248816083. The next prime is 1248816133. The reversal of 1248816131 is 1316188421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1248816131 is a prime.

It is a super-2 number, since 2×1248816131² = 3119083458091618322, which contains 22 as substring.

Together with 1248816133, 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 = 1248816091 and 1248816100.

It is not a weakly prime, because it can be changed into another prime (1248816133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624408065 + 624408066.

It is an arithmetic number, because the mean of its divisors is an integer number (624408066).

Almost surely, 2^1248816131 is an apocalyptic number.

1248816131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248816131 is an equidigital number, since it uses as much as digits as its factorization.

1248816131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 35.

The square root of 1248816131 is about 35338.5926573201. The cubic root of 1248816131 is about 1076.8771618058.

The spelling of 1248816131 in words is "one billion, two hundred forty-eight million, eight hundred sixteen thousand, one hundred thirty-one".