321020134 has 16 divisors (see below), whose sum is σ = 489153600. Its totient is φ = 157981824.

The previous prime is 321020101. The next prime is 321020137. The reversal of 321020134 is 431020123.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321020137) 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, 50232 + ... + 56260.

It is an arithmetic number, because the mean of its divisors is an integer number (30572100).

Almost surely, 2^321020134 is an apocalyptic number.

321020134 is a deficient number, since it is larger than the sum of its proper divisors (168133466).

321020134 is a wasteful number, since it uses less digits than its factorization.

321020134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6447.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 321020134 is about 17917.0347435060. The cubic root of 321020134 is about 684.7164429228.

Adding to 321020134 its reverse (431020123), we get a palindrome (752040257).

The spelling of 321020134 in words is "three hundred twenty-one million, twenty thousand, one hundred thirty-four".