320123031149 has 2 divisors, whose sum is σ = 320123031150. Its totient is φ = 320123031148.

The previous prime is 320123031143. The next prime is 320123031223. The reversal of 320123031149 is 941130321023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313633600900 + 6489430249 = 560030^2 + 80557^2 .

It is a cyclic number.

It is not a de Polignac number, because 320123031149 - 2¹² = 320123027053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320123031143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160061515574 + 160061515575.

It is an arithmetic number, because the mean of its divisors is an integer number (160061515575).

Almost surely, 2^320123031149 is an apocalyptic number.

It is an amenable number.

320123031149 is a deficient number, since it is larger than the sum of its proper divisors (1).

320123031149 is an equidigital number, since it uses as much as digits as its factorization.

320123031149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 320123031149 in words is "three hundred twenty billion, one hundred twenty-three million, thirty-one thousand, one hundred forty-nine".