321131053 has 2 divisors, whose sum is σ = 321131054. Its totient is φ = 321131052.

The previous prime is 321131047. The next prime is 321131059. The reversal of 321131053 is 350131123.

It is a balanced prime because it is at equal distance from previous prime (321131047) and next prime (321131059).

It can be written as a sum of positive squares in only one way, i.e., 203148009 + 117983044 = 14253^2 + 10862^2 .

It is a cyclic number.

It is not a de Polignac number, because 321131053 - 2²⁵ = 287576621 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321131053.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321131059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160565526 + 160565527.

It is an arithmetic number, because the mean of its divisors is an integer number (160565527).

Almost surely, 2^321131053 is an apocalyptic number.

It is an amenable number.

321131053 is a deficient number, since it is larger than the sum of its proper divisors (1).

321131053 is an equidigital number, since it uses as much as digits as its factorization.

321131053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 321131053 is about 17920.1298265386. The cubic root of 321131053 is about 684.7952950046.

Adding to 321131053 its reverse (350131123), we get a palindrome (671262176).

The spelling of 321131053 in words is "three hundred twenty-one million, one hundred thirty-one thousand, fifty-three".