321140230253 has 4 divisors (see below), whose sum is σ = 321141743868. Its totient is φ = 321138716640.

The previous prime is 321140230249. The next prime is 321140230267. The reversal of 321140230253 is 352032041123.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 157655055364 + 163485174889 = 397058^2 + 404333^2 .

It is a cyclic number.

It is not a de Polignac number, because 321140230253 - 2² = 321140230249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321140230223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374018 + ... + 884403.

It is an arithmetic number, because the mean of its divisors is an integer number (80285435967).

Almost surely, 2^321140230253 is an apocalyptic number.

It is an amenable number.

321140230253 is a deficient number, since it is larger than the sum of its proper divisors (1513615).

321140230253 is a wasteful number, since it uses less digits than its factorization.

321140230253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513614.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 321140230253 its reverse (352032041123), we get a palindrome (673172271376).

The spelling of 321140230253 in words is "three hundred twenty-one billion, one hundred forty million, two hundred thirty thousand, two hundred fifty-three".