320031949 has 2 divisors, whose sum is σ = 320031950. Its totient is φ = 320031948.

The previous prime is 320031917. The next prime is 320031973. The reversal of 320031949 is 949130023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182439049 + 137592900 = 13507^2 + 11730^2 .

It is an emirp because it is prime and its reverse (949130023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320031949 - 2⁵ = 320031917 is a prime.

It is a super-3 number, since 3×320031949³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320031949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320038949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160015974 + 160015975.

It is an arithmetic number, because the mean of its divisors is an integer number (160015975).

Almost surely, 2^320031949 is an apocalyptic number.

It is an amenable number.

320031949 is a deficient number, since it is larger than the sum of its proper divisors (1).

320031949 is an equidigital number, since it uses as much as digits as its factorization.

320031949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 320031949 is about 17889.4367994076. The cubic root of 320031949 is about 684.0131412555.

The spelling of 320031949 in words is "three hundred twenty million, thirty-one thousand, nine hundred forty-nine".