1131450511 has 4 divisors (see below), whose sum is σ = 1131634800. Its totient is φ = 1131266224.

The previous prime is 1131450499. The next prime is 1131450539. The reversal of 1131450511 is 1150541311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1150541311 = 283 ⋅4065517.

It is a cyclic number.

It is not a de Polignac number, because 1131450511 - 2⁵ = 1131450479 is a prime.

It is a super-2 number, since 2×1131450511² = 2560360517684322242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131450311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82606 + ... + 95323.

It is an arithmetic number, because the mean of its divisors is an integer number (282908700).

Almost surely, 2^1131450511 is an apocalyptic number.

1131450511 is a deficient number, since it is larger than the sum of its proper divisors (184289).

1131450511 is an equidigital number, since it uses as much as digits as its factorization.

1131450511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184288.

The product of its (nonzero) digits is 300, while the sum is 22.

The square root of 1131450511 is about 33637.0407586637. The cubic root of 1131450511 is about 1042.0259175107.

Adding to 1131450511 its reverse (1150541311), we get a palindrome (2281991822).

The spelling of 1131450511 in words is "one billion, one hundred thirty-one million, four hundred fifty thousand, five hundred eleven".