1131244535 has 16 divisors (see below), whose sum is σ = 1417507776. Its totient is φ = 865041408.

The previous prime is 1131244519. The next prime is 1131244589. The reversal of 1131244535 is 5354421311.

It is not a de Polignac number, because 1131244535 - 2⁴ = 1131244519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131244498 and 1131244507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229517 + ... + 234393.

It is an arithmetic number, because the mean of its divisors is an integer number (88594236).

Almost surely, 2^1131244535 is an apocalyptic number.

1131244535 is a deficient number, since it is larger than the sum of its proper divisors (286263241).

1131244535 is a wasteful number, since it uses less digits than its factorization.

1131244535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6922.

The product of its digits is 7200, while the sum is 29.

The square root of 1131244535 is about 33633.9788755360. The cubic root of 1131244535 is about 1041.9626814687.

Adding to 1131244535 its reverse (5354421311), we get a palindrome (6485665846).

The spelling of 1131244535 in words is "one billion, one hundred thirty-one million, two hundred forty-four thousand, five hundred thirty-five".