1131521533204 has 24 divisors (see below), whose sum is σ = 1982496911528. Its totient is φ = 565094154240.

The previous prime is 1131521533201. The next prime is 1131521533217. The reversal of 1131521533204 is 4023351251311.

It can be written as a sum of positive squares in 4 ways, for example, as 346153369104 + 785368164100 = 588348^2 + 886210^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131521533201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15464434 + ... + 15537430.

Almost surely, 2^{1131521533204} is an apocalyptic number.

It is an amenable number.

1131521533204 is a deficient number, since it is larger than the sum of its proper divisors (850975378324).

1131521533204 is a wasteful number, since it uses less digits than its factorization.

1131521533204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77515 (or 77513 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 1131521533204 its reverse (4023351251311), we get a palindrome (5154872784515).

The spelling of 1131521533204 in words is "one trillion, one hundred thirty-one billion, five hundred twenty-one million, five hundred thirty-three thousand, two hundred four".