1131424551 has 8 divisors (see below), whose sum is σ = 1676184560. Its totient is φ = 754283016.

The previous prime is 1131424529. The next prime is 1131424583. The reversal of 1131424551 is 1554241311.

It is not a de Polignac number, because 1131424551 - 2⁹ = 1131424039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 41904613 = 1131424551 / (1 + 1 + 3 + 1 + 4 + 2 + 4 + 5 + 5 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131424751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20952280 + ... + 20952333.

It is an arithmetic number, because the mean of its divisors is an integer number (209523070).

Almost surely, 2^1131424551 is an apocalyptic number.

1131424551 is a deficient number, since it is larger than the sum of its proper divisors (544760009).

1131424551 is an equidigital number, since it uses as much as digits as its factorization.

1131424551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41904622 (or 41904616 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 1131424551 is about 33636.6548723264. The cubic root of 1131424551 is about 1042.0179480357.

Adding to 1131424551 its reverse (1554241311), we get a palindrome (2685665862).

The spelling of 1131424551 in words is "one billion, one hundred thirty-one million, four hundred twenty-four thousand, five hundred fifty-one".