143135401 has 4 divisors (see below), whose sum is σ = 147752704. Its totient is φ = 138518100.

The previous prime is 143135309. The next prime is 143135411. The reversal of 143135401 is 104531341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104531341 = 29 ⋅3604529.

It is a cyclic number.

It is not a de Polignac number, because 143135401 - 2²³ = 134746793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143135411) 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, 2308605 + ... + 2308666.

It is an arithmetic number, because the mean of its divisors is an integer number (36938176).

Almost surely, 2^143135401 is an apocalyptic number.

It is an amenable number.

143135401 is a deficient number, since it is larger than the sum of its proper divisors (4617303).

143135401 is an equidigital number, since it uses as much as digits as its factorization.

143135401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4617302.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 143135401 is about 11963.9208038168. The cubic root of 143135401 is about 523.0971489811.

Adding to 143135401 its reverse (104531341), we get a palindrome (247666742).

The spelling of 143135401 in words is "one hundred forty-three million, one hundred thirty-five thousand, four hundred one".