11403422431 has 4 divisors (see below), whose sum is σ = 11403732312. Its totient is φ = 11403112552.

The previous prime is 11403422377. The next prime is 11403422449. The reversal of 11403422431 is 13422430411.

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

It is a cyclic number.

It is not a de Polignac number, because 11403422431 - 2²³ = 11395033823 is a prime.

It is a super-2 number, since 2×11403422431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11403422396 and 11403422405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11403422131) 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, 90925 + ... + 176278.

It is an arithmetic number, because the mean of its divisors is an integer number (2850933078).

Almost surely, 2^11403422431 is an apocalyptic number.

11403422431 is a deficient number, since it is larger than the sum of its proper divisors (309881).

11403422431 is an equidigital number, since it uses as much as digits as its factorization.

11403422431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309880.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 11403422431 its reverse (13422430411), we get a palindrome (24825852842).

The spelling of 11403422431 in words is "eleven billion, four hundred three million, four hundred twenty-two thousand, four hundred thirty-one".