321197253 has 8 divisors (see below), whose sum is σ = 461206368. Its totient is φ = 197659824.

The previous prime is 321197249. The next prime is 321197281. The reversal of 321197253 is 352791123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 321197253 - 2² = 321197249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321197053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4117875 + ... + 4117952.

It is an arithmetic number, because the mean of its divisors is an integer number (57650796).

Almost surely, 2^321197253 is an apocalyptic number.

It is an amenable number.

321197253 is a deficient number, since it is larger than the sum of its proper divisors (140009115).

321197253 is a wasteful number, since it uses less digits than its factorization.

321197253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8235843.

The product of its digits is 11340, while the sum is 33.

The square root of 321197253 is about 17921.9768161886. The cubic root of 321197253 is about 684.8423477923.

The spelling of 321197253 in words is "three hundred twenty-one million, one hundred ninety-seven thousand, two hundred fifty-three".