11331020231131 has 16 divisors (see below), whose sum is σ = 12013476456960. Its totient is φ = 10657287931680.

The previous prime is 11331020231129. The next prime is 11331020231149. The reversal of 11331020231131 is 13113202013311.

It is a cyclic number.

It is not a de Polignac number, because 11331020231131 - 2¹ = 11331020231129 is a prime.

It is a super-2 number, since 2×11331020231131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11331020231731) 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, 1940766 + ... + 5140876.

It is an arithmetic number, because the mean of its divisors is an integer number (750842278560).

Almost surely, 2^{11331020231131} is an apocalyptic number.

11331020231131 is a deficient number, since it is larger than the sum of its proper divisors (682456225829).

11331020231131 is a wasteful number, since it uses less digits than its factorization.

11331020231131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201474.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 11331020231131 its reverse (13113202013311), we get a palindrome (24444222244442).

The spelling of 11331020231131 in words is "eleven trillion, three hundred thirty-one billion, twenty million, two hundred thirty-one thousand, one hundred thirty-one".