143250381 has 24 divisors (see below), whose sum is σ = 222191424. Its totient is φ = 88609920.

The previous prime is 143250377. The next prime is 143250383. The reversal of 143250381 is 183052341.

It is a happy number.

143250381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 143250381 - 2² = 143250377 is a prime.

It is a super-2 number, since 2×143250381² = 41041343313290322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143250383) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4270 + ... + 17456.

It is an arithmetic number, because the mean of its divisors is an integer number (9257976).

Almost surely, 2^143250381 is an apocalyptic number.

It is an amenable number.

143250381 is a deficient number, since it is larger than the sum of its proper divisors (78941043).

143250381 is a wasteful number, since it uses less digits than its factorization.

143250381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13281 (or 13278 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 143250381 is about 11968.7251200786. The cubic root of 143250381 is about 523.2371786594.

The spelling of 143250381 in words is "one hundred forty-three million, two hundred fifty thousand, three hundred eighty-one".