141640309 has 2 divisors, whose sum is σ = 141640310. Its totient is φ = 141640308.

The previous prime is 141640249. The next prime is 141640337. The reversal of 141640309 is 903046141.

It is an a-pointer prime, because the next prime (141640337) can be obtained adding 141640309 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75168900 + 66471409 = 8670^2 + 8153^2 .

It is a cyclic number.

It is not a de Polignac number, because 141640309 - 2¹⁵ = 141607541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (141640399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70820154 + 70820155.

It is an arithmetic number, because the mean of its divisors is an integer number (70820155).

Almost surely, 2^141640309 is an apocalyptic number.

It is an amenable number.

141640309 is a deficient number, since it is larger than the sum of its proper divisors (1).

141640309 is an equidigital number, since it uses as much as digits as its factorization.

141640309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 141640309 is about 11901.2734192606. The cubic root of 141640309 is about 521.2694686086.

The spelling of 141640309 in words is "one hundred forty-one million, six hundred forty thousand, three hundred nine".