11020042431 has 24 divisors (see below), whose sum is σ = 16085812080. Its totient is φ = 7269264000.

The previous prime is 11020042403. The next prime is 11020042441. The reversal of 11020042431 is 13424002011.

11020042431 is a `hidden beast` number, since 1 + 10 + 200 + 424 + 31 = 666.

It is not a de Polignac number, because 11020042431 - 2⁶ = 11020042367 is a prime.

It is a super-2 number, since 2×11020042431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020042441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1934235 + ... + 1939923.

It is an arithmetic number, because the mean of its divisors is an integer number (670242170).

Almost surely, 2^11020042431 is an apocalyptic number.

11020042431 is a deficient number, since it is larger than the sum of its proper divisors (5065769649).

11020042431 is a wasteful number, since it uses less digits than its factorization.

11020042431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7927 (or 7924 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 11020042431 its reverse (13424002011), we get a palindrome (24444044442).

The spelling of 11020042431 in words is "eleven billion, twenty million, forty-two thousand, four hundred thirty-one".