11031123131 has 16 divisors (see below), whose sum is σ = 12958031616. Its totient is φ = 9192380256.

The previous prime is 11031123119. The next prime is 11031123133. The reversal of 11031123131 is 13132113011.

It is a cyclic number.

It is not a de Polignac number, because 11031123131 - 2¹⁸ = 11030860987 is a prime.

It is a super-2 number, since 2×11031123131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11031123133) 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, 322220 + ... + 354806.

It is an arithmetic number, because the mean of its divisors is an integer number (809876976).

Almost surely, 2^11031123131 is an apocalyptic number.

11031123131 is a deficient number, since it is larger than the sum of its proper divisors (1926908485).

11031123131 is a wasteful number, since it uses less digits than its factorization.

11031123131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33938.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11031123131 its reverse (13132113011), we get a palindrome (24163236142).

The spelling of 11031123131 in words is "eleven billion, thirty-one million, one hundred twenty-three thousand, one hundred thirty-one".