1131521244303 has 4 divisors (see below), whose sum is σ = 1508694992408. Its totient is φ = 754347496200.

The previous prime is 1131521244283. The next prime is 1131521244311. The reversal of 1131521244303 is 3034421251311.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1131521244303 - 2¹⁴ = 1131521227919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131521244103) 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, 188586874048 + ... + 188586874053.

It is an arithmetic number, because the mean of its divisors is an integer number (377173748102).

Almost surely, 2^{1131521244303} is an apocalyptic number.

1131521244303 is a deficient number, since it is larger than the sum of its proper divisors (377173748105).

1131521244303 is an equidigital number, since it uses as much as digits as its factorization.

1131521244303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377173748104.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 1131521244303 its reverse (3034421251311), we get a palindrome (4165942495614).

The spelling of 1131521244303 in words is "one trillion, one hundred thirty-one billion, five hundred twenty-one million, two hundred forty-four thousand, three hundred three".