321162124253 has 4 divisors (see below), whose sum is σ = 321963027708. Its totient is φ = 320361220800.

The previous prime is 321162124249. The next prime is 321162124259. The reversal of 321162124253 is 352421261123.

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 289569905689 + 31592218564 = 538117^2 + 177742^2 .

It is a cyclic number.

It is not a de Polignac number, because 321162124253 - 2² = 321162124249 is a prime.

It is a super-2 number, since 2×321162124253² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321162124259) 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, 400451126 + ... + 400451927.

It is an arithmetic number, because the mean of its divisors is an integer number (80490756927).

Almost surely, 2^321162124253 is an apocalyptic number.

It is an amenable number.

321162124253 is a deficient number, since it is larger than the sum of its proper divisors (800903455).

321162124253 is an equidigital number, since it uses as much as digits as its factorization.

321162124253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800903454.

The product of its digits is 17280, while the sum is 32.

Adding to 321162124253 its reverse (352421261123), we get a palindrome (673583385376).

The spelling of 321162124253 in words is "three hundred twenty-one billion, one hundred sixty-two million, one hundred twenty-four thousand, two hundred fifty-three".