321953249 has 2 divisors, whose sum is σ = 321953250. Its totient is φ = 321953248.

The previous prime is 321953231. The next prime is 321953257. The reversal of 321953249 is 942359123.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320589025 + 1364224 = 17905^2 + 1168^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321953249 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (321953449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160976624 + 160976625.

It is an arithmetic number, because the mean of its divisors is an integer number (160976625).

Almost surely, 2^321953249 is an apocalyptic number.

It is an amenable number.

321953249 is a deficient number, since it is larger than the sum of its proper divisors (1).

321953249 is an equidigital number, since it uses as much as digits as its factorization.

321953249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 38.

The square root of 321953249 is about 17943.0557319538. The cubic root of 321953249 is about 685.3792270300.

The spelling of 321953249 in words is "three hundred twenty-one million, nine hundred fifty-three thousand, two hundred forty-nine".