11351471143431 has 4 divisors (see below), whose sum is σ = 15135294857912. Its totient is φ = 7567647428952.

The previous prime is 11351471143391. The next prime is 11351471143471. The reversal of 11351471143431 is 13434117415311.

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 (11351471143391) and next prime (11351471143471).

It is not a de Polignac number, because 11351471143431 - 2⁷ = 11351471143303 is a prime.

It is a super-2 number, since 2×11351471143431² (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 11351471143431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11351471143471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1891911857236 + ... + 1891911857241.

It is an arithmetic number, because the mean of its divisors is an integer number (3783823714478).

Almost surely, 2^{11351471143431} is an apocalyptic number.

11351471143431 is a deficient number, since it is larger than the sum of its proper divisors (3783823714481).

11351471143431 is an equidigital number, since it uses as much as digits as its factorization.

11351471143431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3783823714480.

The product of its digits is 60480, while the sum is 39.

Adding to 11351471143431 its reverse (13434117415311), we get a palindrome (24785588558742).

The spelling of 11351471143431 in words is "eleven trillion, three hundred fifty-one billion, four hundred seventy-one million, one hundred forty-three thousand, four hundred thirty-one".