1283860531 has 2 divisors, whose sum is σ = 1283860532. Its totient is φ = 1283860530.

The previous prime is 1283860493. The next prime is 1283860547. The reversal of 1283860531 is 1350683821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1283860531 - 2¹⁵ = 1283827763 is a prime.

It is a super-2 number, since 2×1283860531² = 3296595726119203922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1283861531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641930265 + 641930266.

It is an arithmetic number, because the mean of its divisors is an integer number (641930266).

Almost surely, 2^1283860531 is an apocalyptic number.

1283860531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283860531 is an equidigital number, since it uses as much as digits as its factorization.

1283860531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 1283860531 is about 35830.9995813681. Note that the first 3 decimals coincide. The cubic root of 1283860531 is about 1086.8575232892.

The spelling of 1283860531 in words is "one billion, two hundred eighty-three million, eight hundred sixty thousand, five hundred thirty-one".