1131505136 has 20 divisors (see below), whose sum is σ = 2218706952. Its totient is φ = 558935616.

The previous prime is 1131505069. The next prime is 1131505187. The reversal of 1131505136 is 6315051311.

It is a congruent number.

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, 424691 + ... + 427346.

Almost surely, 2^1131505136 is an apocalyptic number.

1131505136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1131505136 is a deficient number, since it is larger than the sum of its proper divisors (1087201816).

1131505136 is an equidigital number, since it uses as much as digits as its factorization.

1131505136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852128 (or 852122 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 1131505136 is about 33637.8527257612. The cubic root of 1131505136 is about 1042.0426864721.

Adding to 1131505136 its reverse (6315051311), we get a palindrome (7446556447).

The spelling of 1131505136 in words is "one billion, one hundred thirty-one million, five hundred five thousand, one hundred thirty-six".