1248890131 has 2 divisors, whose sum is σ = 1248890132. Its totient is φ = 1248890130.

The previous prime is 1248890113. The next prime is 1248890147. The reversal of 1248890131 is 1310988421.

Together with previous prime (1248890113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (1310988421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1248890131 - 2⁷ = 1248890003 is a prime.

It is a super-2 number, since 2×1248890131² = 3119453118618394322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1248890231) 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, 624445065 + 624445066.

It is an arithmetic number, because the mean of its divisors is an integer number (624445066).

Almost surely, 2^1248890131 is an apocalyptic number.

1248890131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248890131 is an equidigital number, since it uses as much as digits as its factorization.

1248890131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 1248890131 is about 35339.6396557746. The cubic root of 1248890131 is about 1076.8984319068.

The spelling of 1248890131 in words is "one billion, two hundred forty-eight million, eight hundred ninety thousand, one hundred thirty-one".