143610161 has 4 divisors (see below), whose sum is σ = 143710452. Its totient is φ = 143509872.

The previous prime is 143610139. The next prime is 143610163. The reversal of 143610161 is 161016341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161016341 = 37 ⋅4351793.

It can be written as a sum of positive squares in 2 ways, for example, as 136422400 + 7187761 = 11680^2 + 2681^2 .

It is a cyclic number.

It is not a de Polignac number, because 143610161 - 2²⁶ = 76501297 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143610163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47966 + ... + 50871.

It is an arithmetic number, because the mean of its divisors is an integer number (35927613).

Almost surely, 2^143610161 is an apocalyptic number.

It is an amenable number.

143610161 is a deficient number, since it is larger than the sum of its proper divisors (100291).

143610161 is an equidigital number, since it uses as much as digits as its factorization.

143610161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100290.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 143610161 is about 11983.7456999054. The cubic root of 143610161 is about 523.6748572903.

The spelling of 143610161 in words is "one hundred forty-three million, six hundred ten thousand, one hundred sixty-one".