31441123309 has 2 divisors, whose sum is σ = 31441123310. Its totient is φ = 31441123308.

The previous prime is 31441123271. The next prime is 31441123313. The reversal of 31441123309 is 90332114413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29037182409 + 2403940900 = 170403^2 + 49030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31441123309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31441123409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15720561654 + 15720561655.

It is an arithmetic number, because the mean of its divisors is an integer number (15720561655).

Almost surely, 2^31441123309 is an apocalyptic number.

It is an amenable number.

31441123309 is a deficient number, since it is larger than the sum of its proper divisors (1).

31441123309 is an equidigital number, since it uses as much as digits as its factorization.

31441123309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 31441123309 in words is "thirty-one billion, four hundred forty-one million, one hundred twenty-three thousand, three hundred nine".