321533134 has 16 divisors (see below), whose sum is σ = 527154768. Its totient is φ = 146184192.

The previous prime is 321533117. The next prime is 321533137. The reversal of 321533134 is 431335123.

It is a junction number, because it is equal to n+sod(n) for n = 321533099 and 321533108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321533137) 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, 90547 + ... + 94030.

It is an arithmetic number, because the mean of its divisors is an integer number (32947173).

Almost surely, 2^321533134 is an apocalyptic number.

321533134 is a deficient number, since it is larger than the sum of its proper divisors (205621634).

321533134 is a wasteful number, since it uses less digits than its factorization.

321533134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184659.

The product of its digits is 3240, while the sum is 25.

The square root of 321533134 is about 17931.3450136904. The cubic root of 321533134 is about 685.0809814217.

Adding to 321533134 its reverse (431335123), we get a palindrome (752868257).

The spelling of 321533134 in words is "three hundred twenty-one million, five hundred thirty-three thousand, one hundred thirty-four".