143972113 has 2 divisors, whose sum is σ = 143972114. Its totient is φ = 143972112.

The previous prime is 143972107. The next prime is 143972117. The reversal of 143972113 is 311279341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136960209 + 7011904 = 11703^2 + 2648^2 .

It is a cyclic number.

It is not a de Polignac number, because 143972113 - 2²¹ = 141874961 is a prime.

It is not a weakly prime, because it can be changed into another prime (143972117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71986056 + 71986057.

It is an arithmetic number, because the mean of its divisors is an integer number (71986057).

Almost surely, 2^143972113 is an apocalyptic number.

It is an amenable number.

143972113 is a deficient number, since it is larger than the sum of its proper divisors (1).

143972113 is an equidigital number, since it uses as much as digits as its factorization.

143972113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 143972113 is about 11998.8379854051. The cubic root of 143972113 is about 524.1144411873.

The spelling of 143972113 in words is "one hundred forty-three million, nine hundred seventy-two thousand, one hundred thirteen".