319155149 has 2 divisors, whose sum is σ = 319155150. Its totient is φ = 319155148.

The previous prime is 319155113. The next prime is 319155173. The reversal of 319155149 is 941551913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 307300900 + 11854249 = 17530^2 + 3443^2 .

It is a cyclic number.

It is not a de Polignac number, because 319155149 - 2⁸ = 319154893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (319155349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159577574 + 159577575.

It is an arithmetic number, because the mean of its divisors is an integer number (159577575).

Almost surely, 2^319155149 is an apocalyptic number.

It is an amenable number.

319155149 is a deficient number, since it is larger than the sum of its proper divisors (1).

319155149 is an equidigital number, since it uses as much as digits as its factorization.

319155149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24300, while the sum is 38.

The square root of 319155149 is about 17864.9139096722. The cubic root of 319155149 is about 683.3879002760.

The spelling of 319155149 in words is "three hundred nineteen million, one hundred fifty-five thousand, one hundred forty-nine".