1131456567 has 4 divisors (see below), whose sum is σ = 1508608760. Its totient is φ = 754304376.

The previous prime is 1131456553. The next prime is 1131456583. The reversal of 1131456567 is 7656541311.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1131456567 - 2⁴ = 1131456551 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 (1131456527) 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, 188576092 + ... + 188576097.

It is an arithmetic number, because the mean of its divisors is an integer number (377152190).

Almost surely, 2^1131456567 is an apocalyptic number.

1131456567 is a deficient number, since it is larger than the sum of its proper divisors (377152193).

1131456567 is an equidigital number, since it uses as much as digits as its factorization.

1131456567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377152192.

The product of its digits is 75600, while the sum is 39.

The square root of 1131456567 is about 33637.1307783527. The cubic root of 1131456567 is about 1042.0277766280.

Adding to 1131456567 its reverse (7656541311), we get a palindrome (8787997878).

The spelling of 1131456567 in words is "one billion, one hundred thirty-one million, four hundred fifty-six thousand, five hundred sixty-seven".