321148943 has 2 divisors, whose sum is σ = 321148944. Its totient is φ = 321148942.

The previous prime is 321148831. The next prime is 321148967. The reversal of 321148943 is 349841123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321148943 - 2²² = 316954639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321148543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160574471 + 160574472.

It is an arithmetic number, because the mean of its divisors is an integer number (160574472).

Almost surely, 2^321148943 is an apocalyptic number.

321148943 is a deficient number, since it is larger than the sum of its proper divisors (1).

321148943 is an equidigital number, since it uses as much as digits as its factorization.

321148943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 35.

The square root of 321148943 is about 17920.6289789170. The cubic root of 321148943 is about 684.8080112671.

The spelling of 321148943 in words is "three hundred twenty-one million, one hundred forty-eight thousand, nine hundred forty-three".