143481 has 12 divisors (see below), whose sum is σ = 207888. Its totient is φ = 87984.

The previous prime is 143477. The next prime is 143483. The reversal of 143481 is 184341.

It is not a de Polignac number, because 143481 - 2² = 143477 is a prime.

It is a super-2 number, since 2×143481² = 41173594722, which contains 22 as substring.

143481 is a modest number, since divided by 481 gives 143 as remainder.

It is a nialpdrome in base 11.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143481.

It is not an unprimeable number, because it can be changed into a prime (143483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366 + ... + 648.

It is an arithmetic number, because the mean of its divisors is an integer number (17324).

2¹⁴³⁴⁸¹ is an apocalyptic number.

It is an amenable number.

143481 is a deficient number, since it is larger than the sum of its proper divisors (64407).

143481 is a wasteful number, since it uses less digits than its factorization.

143481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 299 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 143481 is about 378.7888593927. The cubic root of 143481 is about 52.3517814883.

The spelling of 143481 in words is "one hundred forty-three thousand, four hundred eighty-one".