1283780131 has 2 divisors, whose sum is σ = 1283780132. Its totient is φ = 1283780130.

The previous prime is 1283780123. The next prime is 1283780171. The reversal of 1283780131 is 1310873821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1283780131 - 2³ = 1283780123 is a prime.

It is a super-2 number, since 2×1283780131² = 3296182849500754322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1283780111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641890065 + 641890066.

It is an arithmetic number, because the mean of its divisors is an integer number (641890066).

Almost surely, 2^1283780131 is an apocalyptic number.

1283780131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283780131 is an equidigital number, since it uses as much as digits as its factorization.

1283780131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1283780131 is about 35829.8776302683. The cubic root of 1283780131 is about 1086.8348351630.

The spelling of 1283780131 in words is "one billion, two hundred eighty-three million, seven hundred eighty thousand, one hundred thirty-one".