143140381 has 2 divisors, whose sum is σ = 143140382. Its totient is φ = 143140380.

The previous prime is 143140379. The next prime is 143140409. The reversal of 143140381 is 183041341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80192025 + 62948356 = 8955^2 + 7934^2 .

It is a cyclic number.

It is not a de Polignac number, because 143140381 - 2¹ = 143140379 is a prime.

It is a super-2 number, since 2×143140381² = 40978337345650322, which contains 22 as substring.

Together with 143140379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143140301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71570190 + 71570191.

It is an arithmetic number, because the mean of its divisors is an integer number (71570191).

Almost surely, 2^143140381 is an apocalyptic number.

It is an amenable number.

143140381 is a deficient number, since it is larger than the sum of its proper divisors (1).

143140381 is an equidigital number, since it uses as much as digits as its factorization.

143140381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 143140381 is about 11964.1289277573. The cubic root of 143140381 is about 523.1032154831.

The spelling of 143140381 in words is "one hundred forty-three million, one hundred forty thousand, three hundred eighty-one".