141431989 has 2 divisors, whose sum is σ = 141431990. Its totient is φ = 141431988.

The previous prime is 141431987. The next prime is 141432023. The reversal of 141431989 is 989134141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140232964 + 1199025 = 11842^2 + 1095^2 .

It is an emirp because it is prime and its reverse (989134141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 141431989 - 2¹ = 141431987 is a prime.

It is a super-2 number, since 2×141431989² = 40006015024992242, which contains 22 as substring.

Together with 141431987, it forms a pair of twin primes.

It is equal to p_7988350 and since 141431989 and 7988350 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141431981) 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, 70715994 + 70715995.

It is an arithmetic number, because the mean of its divisors is an integer number (70715995).

Almost surely, 2^141431989 is an apocalyptic number.

It is an amenable number.

141431989 is a deficient number, since it is larger than the sum of its proper divisors (1).

141431989 is an equidigital number, since it uses as much as digits as its factorization.

141431989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 141431989 is about 11892.5181942261. The cubic root of 141431989 is about 521.0137877757.

The spelling of 141431989 in words is "one hundred forty-one million, four hundred thirty-one thousand, nine hundred eighty-nine".