143135223457 has 8 divisors (see below), whose sum is σ = 143413972200. Its totient is φ = 142856571264.

The previous prime is 143135223433. The next prime is 143135223479. The reversal of 143135223457 is 754322531341.

It can be written as a sum of positive squares in 4 ways, for example, as 3116318976 + 140018904481 = 55824^2 + 374191^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143135223457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143135223157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3414219 + ... + 3455887.

It is an arithmetic number, because the mean of its divisors is an integer number (17926746525).

Almost surely, 2^143135223457 is an apocalyptic number.

It is an amenable number.

143135223457 is a deficient number, since it is larger than the sum of its proper divisors (278748743).

143135223457 is an equidigital number, since it uses as much as digits as its factorization.

143135223457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48275.

The product of its digits is 302400, while the sum is 40.

Adding to 143135223457 its reverse (754322531341), we get a palindrome (897457754798).

The spelling of 143135223457 in words is "one hundred forty-three billion, one hundred thirty-five million, two hundred twenty-three thousand, four hundred fifty-seven".