11022031131 has 16 divisors (see below), whose sum is σ = 15224885760. Its totient is φ = 7084334880.

The previous prime is 11022031127. The next prime is 11022031151. The reversal of 11022031131 is 13113022011.

It is a happy number.

It is not a de Polignac number, because 11022031131 - 2² = 11022031127 is a prime.

It is a super-2 number, since 2×11022031131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11022031131.

It is not an unprimeable number, because it can be changed into a prime (11022031151) 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, 31555 + ... + 151788.

It is an arithmetic number, because the mean of its divisors is an integer number (951555360).

Almost surely, 2^11022031131 is an apocalyptic number.

11022031131 is a deficient number, since it is larger than the sum of its proper divisors (4202854629).

11022031131 is a wasteful number, since it uses less digits than its factorization.

11022031131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184066.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11022031131 its reverse (13113022011), we get a palindrome (24135053142).

The spelling of 11022031131 in words is "eleven billion, twenty-two million, thirty-one thousand, one hundred thirty-one".