11531311303242 has 16 divisors (see below), whose sum is σ = 23290965405792. Its totient is φ = 3805713301200.

The previous prime is 11531311303231. The next prime is 11531311303277. The reversal of 11531311303242 is 24230311313511.

It is a super-2 number, since 2×11531311303242² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9514282648 + ... + 9514283859.

It is an arithmetic number, because the mean of its divisors is an integer number (1455685337862).

Almost surely, 2^{11531311303242} is an apocalyptic number.

11531311303242 is an abundant number, since it is smaller than the sum of its proper divisors (11759654102550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11531311303242 is a wasteful number, since it uses less digits than its factorization.

11531311303242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19028566613.

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 11531311303242 its reverse (24230311313511), we get a palindrome (35761622616753).

The spelling of 11531311303242 in words is "eleven trillion, five hundred thirty-one billion, three hundred eleven million, three hundred three thousand, two hundred forty-two".