321153 has 16 divisors (see below), whose sum is σ = 502656. Its totient is φ = 178560.

The previous prime is 321143. The next prime is 321163. The reversal of 321153 is 351123.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (321143) and next prime (321163).

It is not a de Polignac number, because 321153 - 2¹⁶ = 255617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675 + ... + 1047.

It is an arithmetic number, because the mean of its divisors is an integer number (31416).

2³²¹¹⁵³ is an apocalyptic number.

It is an amenable number.

321153 is a deficient number, since it is larger than the sum of its proper divisors (181503).

321153 is a wasteful number, since it uses less digits than its factorization.

321153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424.

The product of its digits is 90, while the sum is 15.

The square root of 321153 is about 566.7036262457. The cubic root of 321153 is about 68.4810894928.

Adding to 321153 its reverse (351123), we get a palindrome (672276).

It can be divided in two parts, 321 and 153, that added together give a palindrome (474).

The spelling of 321153 in words is "three hundred twenty-one thousand, one hundred fifty-three".