11031321131 has 16 divisors (see below), whose sum is σ = 12299364000. Its totient is φ = 9832462848.

The previous prime is 11031321127. The next prime is 11031321137. The reversal of 11031321131 is 13112313011.

It is a cyclic number.

It is not a de Polignac number, because 11031321131 - 2² = 11031321127 is a prime.

It is a super-2 number, since 2×11031321131² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (11031321137) 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, 1400801 + ... + 1408653.

It is an arithmetic number, because the mean of its divisors is an integer number (768710250).

Almost surely, 2^11031321131 is an apocalyptic number.

11031321131 is a deficient number, since it is larger than the sum of its proper divisors (1268042869).

11031321131 is a wasteful number, since it uses less digits than its factorization.

11031321131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12238.

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

Adding to 11031321131 its reverse (13112313011), we get a palindrome (24143634142).

The spelling of 11031321131 in words is "eleven billion, thirty-one million, three hundred twenty-one thousand, one hundred thirty-one".