143715961 has 2 divisors, whose sum is σ = 143715962. Its totient is φ = 143715960.

The previous prime is 143715919. The next prime is 143715973. The reversal of 143715961 is 169517341.

It is a happy number.

143715961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85285225 + 58430736 = 9235^2 + 7644^2 .

It is a cyclic number.

It is not a de Polignac number, because 143715961 - 2⁷ = 143715833 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143715961.

It is not a weakly prime, because it can be changed into another prime (143715361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71857980 + 71857981.

It is an arithmetic number, because the mean of its divisors is an integer number (71857981).

Almost surely, 2^143715961 is an apocalyptic number.

It is an amenable number.

143715961 is a deficient number, since it is larger than the sum of its proper divisors (1).

143715961 is an equidigital number, since it uses as much as digits as its factorization.

143715961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 37.

The square root of 143715961 is about 11988.1591998105. The cubic root of 143715961 is about 523.8034257221.

The spelling of 143715961 in words is "one hundred forty-three million, seven hundred fifteen thousand, nine hundred sixty-one".