143540331311 has 4 divisors (see below), whose sum is σ = 154581895272. Its totient is φ = 132498767352.

The previous prime is 143540331307. The next prime is 143540331343. The reversal of 143540331311 is 113133045341.

It is a happy number.

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 143540331311 - 2² = 143540331307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143540531311) 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, 5520781961 + ... + 5520781986.

It is an arithmetic number, because the mean of its divisors is an integer number (38645473818).

Almost surely, 2^143540331311 is an apocalyptic number.

143540331311 is a deficient number, since it is larger than the sum of its proper divisors (11041563961).

143540331311 is a wasteful number, since it uses less digits than its factorization.

143540331311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11041563960.

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 143540331311 its reverse (113133045341), we get a palindrome (256673376652).

The spelling of 143540331311 in words is "one hundred forty-three billion, five hundred forty million, three hundred thirty-one thousand, three hundred eleven".