1131511453 has 4 divisors (see below), whose sum is σ = 1140421120. Its totient is φ = 1122601788.

The previous prime is 1131511369. The next prime is 1131511487. The reversal of 1131511453 is 3541151311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1131511453 - 2²¹ = 1129414301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131515453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4454643 + ... + 4454896.

It is an arithmetic number, because the mean of its divisors is an integer number (285105280).

Almost surely, 2^1131511453 is an apocalyptic number.

It is an amenable number.

1131511453 is a deficient number, since it is larger than the sum of its proper divisors (8909667).

1131511453 is an equidigital number, since it uses as much as digits as its factorization.

1131511453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8909666.

The product of its digits is 900, while the sum is 25.

The square root of 1131511453 is about 33637.9466228246. The cubic root of 1131511453 is about 1042.0446256506.

Adding to 1131511453 its reverse (3541151311), we get a palindrome (4672662764).

The spelling of 1131511453 in words is "one billion, one hundred thirty-one million, five hundred eleven thousand, four hundred fifty-three".