143093961 has 6 divisors (see below), whose sum is σ = 206691290. Its totient is φ = 95395968.

The previous prime is 143093957. The next prime is 143093963. The reversal of 143093961 is 169390341.

It can be written as a sum of positive squares in only one way, i.e., 111957561 + 31136400 = 10581^2 + 5580^2 .

It is not a de Polignac number, because 143093961 - 2² = 143093957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143093963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7949656 + ... + 7949673.

Almost surely, 2^143093961 is an apocalyptic number.

It is an amenable number.

143093961 is a deficient number, since it is larger than the sum of its proper divisors (63597329).

143093961 is a wasteful number, since it uses less digits than its factorization.

143093961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15899335 (or 15899332 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 143093961 is about 11962.1888047297. The cubic root of 143093961 is about 523.0466624302.

The spelling of 143093961 in words is "one hundred forty-three million, ninety-three thousand, nine hundred sixty-one".