1131315208 has 16 divisors (see below), whose sum is σ = 2170547280. Its totient is φ = 552502608.

The previous prime is 1131315197. The next prime is 1131315247. The reversal of 1131315208 is 8025131311.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1644010 + ... + 1644697.

It is an arithmetic number, because the mean of its divisors is an integer number (135659205).

Almost surely, 2^1131315208 is an apocalyptic number.

It is an amenable number.

1131315208 is a deficient number, since it is larger than the sum of its proper divisors (1039232072).

1131315208 is a wasteful number, since it uses less digits than its factorization.

1131315208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288756 (or 3288752 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1131315208 is about 33635.0294782092. The cubic root of 1131315208 is about 1041.9843794284.

Adding to 1131315208 its reverse (8025131311), we get a palindrome (9156446519).

The spelling of 1131315208 in words is "one billion, one hundred thirty-one million, three hundred fifteen thousand, two hundred eight".