1131524421 has 8 divisors (see below), whose sum is σ = 1520216544. Its totient is φ = 748590960.

The previous prime is 1131524411. The next prime is 1131524431. The reversal of 1131524421 is 1244251311.

It is an interprime number because it is at equal distance from previous prime (1131524411) and next prime (1131524431).

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

It is not a de Polignac number, because 1131524421 - 2⁹ = 1131523909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131524391 and 1131524400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131524411) 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, 1439206 + ... + 1439991.

It is an arithmetic number, because the mean of its divisors is an integer number (190027068).

Almost surely, 2^1131524421 is an apocalyptic number.

It is an amenable number.

1131524421 is a deficient number, since it is larger than the sum of its proper divisors (388692123).

1131524421 is a wasteful number, since it uses less digits than its factorization.

1131524421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879331.

The product of its digits is 960, while the sum is 24.

The square root of 1131524421 is about 33638.1393807684. The cubic root of 1131524421 is about 1042.0486065156.

Adding to 1131524421 its reverse (1244251311), we get a palindrome (2375775732).

The spelling of 1131524421 in words is "one billion, one hundred thirty-one million, five hundred twenty-four thousand, four hundred twenty-one".