1013111287 has 2 divisors, whose sum is σ = 1013111288. Its totient is φ = 1013111286.

The previous prime is 1013111249. The next prime is 1013111303. The reversal of 1013111287 is 7821113101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1013111287 - 2¹⁹ = 1012586999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1013111227) 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, 506555643 + 506555644.

It is an arithmetic number, because the mean of its divisors is an integer number (506555644).

Almost surely, 2^1013111287 is an apocalyptic number.

1013111287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013111287 is an equidigital number, since it uses as much as digits as its factorization.

1013111287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 25.

The square root of 1013111287 is about 31829.4091525432. The cubic root of 1013111287 is about 1004.3514662759.

Adding to 1013111287 its reverse (7821113101), we get a palindrome (8834224388).

The spelling of 1013111287 in words is "one billion, thirteen million, one hundred eleven thousand, two hundred eighty-seven".