11100243431 has 4 divisors (see below), whose sum is σ = 11100454752. Its totient is φ = 11100032112.

The previous prime is 11100243419. The next prime is 11100243443. The reversal of 11100243431 is 13434200111.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11100243419) and next prime (11100243443).

It is a cyclic number.

It is not a de Polignac number, because 11100243431 - 2³⁰ = 10026501607 is a prime.

It is a super-2 number, since 2×11100243431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100243481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40850 + ... + 154496.

It is an arithmetic number, because the mean of its divisors is an integer number (2775113688).

Almost surely, 2^11100243431 is an apocalyptic number.

11100243431 is a deficient number, since it is larger than the sum of its proper divisors (211321).

11100243431 is an equidigital number, since it uses as much as digits as its factorization.

11100243431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211320.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11100243431 its reverse (13434200111), we get a palindrome (24534443542).

The spelling of 11100243431 in words is "eleven billion, one hundred million, two hundred forty-three thousand, four hundred thirty-one".