143321461 has 8 divisors (see below), whose sum is σ = 148188600. Its totient is φ = 138506688.

The previous prime is 143321429. The next prime is 143321473. The reversal of 143321461 is 164123341.

143321461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4223025 + 139098436 = 2055^2 + 11794^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 143321461 - 2⁵ = 143321429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143321261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7486 + ... + 18511.

It is an arithmetic number, because the mean of its divisors is an integer number (18523575).

Almost surely, 2^143321461 is an apocalyptic number.

It is an amenable number.

143321461 is a deficient number, since it is larger than the sum of its proper divisors (4867139).

143321461 is a wasteful number, since it uses less digits than its factorization.

143321461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26183.

The product of its digits is 1728, while the sum is 25.

The square root of 143321461 is about 11971.6941574699. The cubic root of 143321461 is about 523.3237067572.

The spelling of 143321461 in words is "one hundred forty-three million, three hundred twenty-one thousand, four hundred sixty-one".