143471447 has 16 divisors (see below), whose sum is σ = 171459072. Its totient is φ = 117379680.

The previous prime is 143471437. The next prime is 143471479. The reversal of 143471447 is 744174341.

143471447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 143471447 - 2¹² = 143467351 is a prime.

It is a super-2 number, since 2×143471447² = 41168112208547618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143471407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151028 + ... + 151974.

It is an arithmetic number, because the mean of its divisors is an integer number (10716192).

Almost surely, 2^143471447 is an apocalyptic number.

143471447 is a deficient number, since it is larger than the sum of its proper divisors (27987625).

143471447 is an equidigital number, since it uses as much as digits as its factorization.

143471447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918.

The product of its digits is 37632, while the sum is 35.

The square root of 143471447 is about 11977.9567122277. The cubic root of 143471447 is about 523.5061959775.

The spelling of 143471447 in words is "one hundred forty-three million, four hundred seventy-one thousand, four hundred forty-seven".