1131528016 has 20 divisors (see below), whose sum is σ = 2204453524. Its totient is φ = 562636800.

The previous prime is 1131528011. The next prime is 1131528031. The reversal of 1131528016 is 6108251311.

It can be written as a sum of positive squares in 2 ways, for example, as 55950400 + 1075577616 = 7480^2 + 32796^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131528011) 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, 192465 + ... + 198256.

Almost surely, 2^1131528016 is an apocalyptic number.

1131528016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1131528016 is a deficient number, since it is larger than the sum of its proper divisors (1072925508).

1131528016 is a wasteful number, since it uses less digits than its factorization.

1131528016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390910 (or 390904 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1131528016 is about 33638.1928170941. The cubic root of 1131528016 is about 1042.0497100890.

Adding to 1131528016 its reverse (6108251311), we get a palindrome (7239779327).

The spelling of 1131528016 in words is "one billion, one hundred thirty-one million, five hundred twenty-eight thousand, sixteen".