31032145144109 has 2 divisors, whose sum is σ = 31032145144110. Its totient is φ = 31032145144108.

The previous prime is 31032145144069. The next prime is 31032145144111. The reversal of 31032145144109 is 90144154123013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18380109563209 + 12652035580900 = 4287203^2 + 3556970^2 .

It is an emirp because it is prime and its reverse (90144154123013) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31032145144109 is a prime.

Together with 31032145144111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31032145144199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15516072572054 + 15516072572055.

It is an arithmetic number, because the mean of its divisors is an integer number (15516072572055).

Almost surely, 2^{31032145144109} is an apocalyptic number.

It is an amenable number.

31032145144109 is a deficient number, since it is larger than the sum of its proper divisors (1).

31032145144109 is an equidigital number, since it uses as much as digits as its factorization.

31032145144109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 31032145144109 in words is "thirty-one trillion, thirty-two billion, one hundred forty-five million, one hundred forty-four thousand, one hundred nine".