321240134 has 24 divisors (see below), whose sum is σ = 501424248. Its totient is φ = 154344960.

The previous prime is 321240131. The next prime is 321240137. The reversal of 321240134 is 431042123.

It is an interprime number because it is at equal distance from previous prime (321240131) and next prime (321240137).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321240131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 556454 + ... + 557030.

It is an arithmetic number, because the mean of its divisors is an integer number (20892677).

Almost surely, 2^321240134 is an apocalyptic number.

321240134 is a deficient number, since it is larger than the sum of its proper divisors (180184114).

321240134 is a wasteful number, since it uses less digits than its factorization.

321240134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 939 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 321240134 is about 17923.1731007654. The cubic root of 321240134 is about 684.8728227498.

Adding to 321240134 its reverse (431042123), we get a palindrome (752282257).

The spelling of 321240134 in words is "three hundred twenty-one million, two hundred forty thousand, one hundred thirty-four".