31023030323149 has 2 divisors, whose sum is σ = 31023030323150. Its totient is φ = 31023030323148.

The previous prime is 31023030323147. The next prime is 31023030323249. The reversal of 31023030323149 is 94132303032013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28368353178025 + 2654677145124 = 5326195^2 + 1629318^2 .

It is a cyclic number.

It is not a de Polignac number, because 31023030323149 - 2¹ = 31023030323147 is a prime.

Together with 31023030323147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31023030323147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15511515161574 + 15511515161575.

It is an arithmetic number, because the mean of its divisors is an integer number (15511515161575).

Almost surely, 2^{31023030323149} is an apocalyptic number.

It is an amenable number.

31023030323149 is a deficient number, since it is larger than the sum of its proper divisors (1).

31023030323149 is an equidigital number, since it uses as much as digits as its factorization.

31023030323149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 34.

The spelling of 31023030323149 in words is "thirty-one trillion, twenty-three billion, thirty million, three hundred twenty-three thousand, one hundred forty-nine".