1131253541 has 8 divisors (see below), whose sum is σ = 1245629664. Its totient is φ = 1018799920.

The previous prime is 1131253537. The next prime is 1131253553. The reversal of 1131253541 is 1453521311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131253541 - 2² = 1131253537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131253541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131253511) 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, 479390 + ... + 481743.

It is an arithmetic number, because the mean of its divisors is an integer number (155703708).

Almost surely, 2^1131253541 is an apocalyptic number.

1131253541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1131253541 is a deficient number, since it is larger than the sum of its proper divisors (114376123).

1131253541 is a wasteful number, since it uses less digits than its factorization.

1131253541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961251.

The product of its digits is 1800, while the sum is 26.

The square root of 1131253541 is about 33634.1127577345. The cubic root of 1131253541 is about 1041.9654465328.

Adding to 1131253541 its reverse (1453521311), we get a palindrome (2584774852).

The spelling of 1131253541 in words is "one billion, one hundred thirty-one million, two hundred fifty-three thousand, five hundred forty-one".