143681379 has 4 divisors (see below), whose sum is σ = 191575176. Its totient is φ = 95787584.

The previous prime is 143681339. The next prime is 143681389. The reversal of 143681379 is 973186341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 973186341 = 3 ⋅324395447.

It is a cyclic number.

It is not a de Polignac number, because 143681379 - 2⁸ = 143681123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143681379.

It is not an unprimeable number, because it can be changed into a prime (143681309) 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, 23946894 + ... + 23946899.

It is an arithmetic number, because the mean of its divisors is an integer number (47893794).

Almost surely, 2^143681379 is an apocalyptic number.

143681379 is a deficient number, since it is larger than the sum of its proper divisors (47893797).

143681379 is an equidigital number, since it uses as much as digits as its factorization.

143681379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47893796.

The product of its digits is 108864, while the sum is 42.

The square root of 143681379 is about 11986.7167731619. The cubic root of 143681379 is about 523.7614085306.

The spelling of 143681379 in words is "one hundred forty-three million, six hundred eighty-one thousand, three hundred seventy-nine".