803143961 has 2 divisors, whose sum is σ = 803143962. Its totient is φ = 803143960.

The previous prime is 803143871. The next prime is 803144011. The reversal of 803143961 is 169341308.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 771783961 + 31360000 = 27781^2 + 5600^2 .

It is a cyclic number.

It is not a de Polignac number, because 803143961 - 2¹⁰ = 803142937 is a prime.

It is a Chen prime.

It is equal to p_41299433 and since 803143961 and 41299433 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (803143261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401571980 + 401571981.

It is an arithmetic number, because the mean of its divisors is an integer number (401571981).

Almost surely, 2^803143961 is an apocalyptic number.

It is an amenable number.

803143961 is a deficient number, since it is larger than the sum of its proper divisors (1).

803143961 is an equidigital number, since it uses as much as digits as its factorization.

803143961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 803143961 is about 28339.7946534551. The cubic root of 803143961 is about 929.5322583342.

The spelling of 803143961 in words is "eight hundred three million, one hundred forty-three thousand, nine hundred sixty-one".