1131087479 has 2 divisors, whose sum is σ = 1131087480. Its totient is φ = 1131087478.

The previous prime is 1131087457. The next prime is 1131087497. The reversal of 1131087479 is 9747801311.

Together with next prime (1131087497) 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 (9747801311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1131087479 - 2¹² = 1131083383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131087449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565543739 + 565543740.

It is an arithmetic number, because the mean of its divisors is an integer number (565543740).

Almost surely, 2^1131087479 is an apocalyptic number.

1131087479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131087479 is an equidigital number, since it uses as much as digits as its factorization.

1131087479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 41.

The square root of 1131087479 is about 33631.6440127449. The cubic root of 1131087479 is about 1041.9144590436.

It can be divided in two parts, 11310 and 87479, that added together give a palindrome (98789).

The spelling of 1131087479 in words is "one billion, one hundred thirty-one million, eighty-seven thousand, four hundred seventy-nine".