873142381 has 2 divisors, whose sum is σ = 873142382. Its totient is φ = 873142380.

The previous prime is 873142367. The next prime is 873142393. The reversal of 873142381 is 183241378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 872020900 + 1121481 = 29530^2 + 1059^2 .

It is a cyclic number.

It is not a de Polignac number, because 873142381 - 2¹⁷ = 873011309 is a prime.

It is a super-2 number, since 2×873142381² = 1524755234996698322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 873142381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (873142331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436571190 + 436571191.

It is an arithmetic number, because the mean of its divisors is an integer number (436571191).

Almost surely, 2^873142381 is an apocalyptic number.

It is an amenable number.

873142381 is a deficient number, since it is larger than the sum of its proper divisors (1).

873142381 is an equidigital number, since it uses as much as digits as its factorization.

873142381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 873142381 is about 29548.9827405276. The cubic root of 873142381 is about 955.7882552025.

The spelling of 873142381 in words is "eight hundred seventy-three million, one hundred forty-two thousand, three hundred eighty-one".