11204401232431 has 16 divisors (see below), whose sum is σ = 12366090132480. Its totient is φ = 10066670349120.

The previous prime is 11204401232407. The next prime is 11204401232443. The reversal of 11204401232431 is 13423210440211.

It is a happy number.

It is not a de Polignac number, because 11204401232431 - 2¹³ = 11204401224239 is a prime.

It is a super-2 number, since 2×11204401232431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11204401232431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11204401232491) 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, 572265 + ... + 4768258.

It is an arithmetic number, because the mean of its divisors is an integer number (772880633280).

Almost surely, 2^{11204401232431} is an apocalyptic number.

11204401232431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11204401232431 is a deficient number, since it is larger than the sum of its proper divisors (1161688900049).

11204401232431 is a wasteful number, since it uses less digits than its factorization.

11204401232431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5342766.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 11204401232431 its reverse (13423210440211), we get a palindrome (24627611672642).

The spelling of 11204401232431 in words is "eleven trillion, two hundred four billion, four hundred one million, two hundred thirty-two thousand, four hundred thirty-one".