11321201331 has 16 divisors (see below), whose sum is σ = 18296891520. Its totient is φ = 6861333960.

The previous prime is 11321201329. The next prime is 11321201347. The reversal of 11321201331 is 13310212311.

11321201331 is a `hidden beast` number, since 1 + 132 + 1 + 201 + 331 = 666.

It is not a de Polignac number, because 11321201331 - 2¹ = 11321201329 is a prime.

It is a super-2 number, since 2×11321201331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11321202331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19058965 + ... + 19059558.

It is an arithmetic number, because the mean of its divisors is an integer number (1143555720).

Almost surely, 2^11321201331 is an apocalyptic number.

11321201331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11321201331 is a deficient number, since it is larger than the sum of its proper divisors (6975690189).

11321201331 is a wasteful number, since it uses less digits than its factorization.

11321201331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38118543 (or 38118537 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11321201331 its reverse (13310212311), we get a palindrome (24631413642).

The spelling of 11321201331 in words is "eleven billion, three hundred twenty-one million, two hundred one thousand, three hundred thirty-one".