143023481 has 2 divisors, whose sum is σ = 143023482. Its totient is φ = 143023480.

The previous prime is 143023477. The next prime is 143023483. The reversal of 143023481 is 184320341.

143023481 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., 93799225 + 49224256 = 9685^2 + 7016^2 .

It is a cyclic number.

It is not a de Polignac number, because 143023481 - 2² = 143023477 is a prime.

It is a super-2 number, since 2×143023481² = 40911432234714722, which contains 22 as substring.

Together with 143023483, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_8073323 and since 143023481 and 8073323 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 143023481.

It is not a weakly prime, because it can be changed into another prime (143023483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71511740 + 71511741.

It is an arithmetic number, because the mean of its divisors is an integer number (71511741).

Almost surely, 2^143023481 is an apocalyptic number.

It is an amenable number.

143023481 is a deficient number, since it is larger than the sum of its proper divisors (1).

143023481 is an equidigital number, since it uses as much as digits as its factorization.

143023481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 143023481 is about 11959.2424927334. The cubic root of 143023481 is about 522.9607739166.

The spelling of 143023481 in words is "one hundred forty-three million, twenty-three thousand, four hundred eighty-one".