11112203431 has 4 divisors (see below), whose sum is σ = 12699661072. Its totient is φ = 9524745792.

The previous prime is 11112203419. The next prime is 11112203449. The reversal of 11112203431 is 13430221111.

11112203431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13430221111 = 23 ⋅583922657.

It is a cyclic number.

It is not a de Polignac number, because 11112203431 - 2¹⁹ = 11111679143 is a prime.

It is a super-2 number, since 2×11112203431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11112203399 and 11112203408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112203411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793728810 + ... + 793728823.

It is an arithmetic number, because the mean of its divisors is an integer number (3174915268).

Almost surely, 2^11112203431 is an apocalyptic number.

11112203431 is a deficient number, since it is larger than the sum of its proper divisors (1587457641).

11112203431 is an equidigital number, since it uses as much as digits as its factorization.

11112203431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587457640.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11112203431 its reverse (13430221111), we get a palindrome (24542424542).

The spelling of 11112203431 in words is "eleven billion, one hundred twelve million, two hundred three thousand, four hundred thirty-one".