11431420334 has 4 divisors (see below), whose sum is σ = 17147130504. Its totient is φ = 5715710166.

The previous prime is 11431420309. The next prime is 11431420337. The reversal of 11431420334 is 43302413411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43302413411 = 38603 ⋅1121737.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431420337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2857855082 + ... + 2857855085.

It is an arithmetic number, because the mean of its divisors is an integer number (4286782626).

Almost surely, 2^11431420334 is an apocalyptic number.

11431420334 is a deficient number, since it is larger than the sum of its proper divisors (5715710170).

11431420334 is an equidigital number, since it uses as much as digits as its factorization.

11431420334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5715710169.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 11431420334 its reverse (43302413411), we get a palindrome (54733833745).

The spelling of 11431420334 in words is "eleven billion, four hundred thirty-one million, four hundred twenty thousand, three hundred thirty-four".