253203163321 has 8 divisors (see below), whose sum is σ = 253520386560. Its totient is φ = 252886090752.

The previous prime is 253203163319. The next prime is 253203163387. The reversal of 253203163321 is 123361302352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253203163321 - 2¹ = 253203163319 is a prime.

It is a super-2 number, since 2×253203163321² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253203169321) 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, 3535161 + ... + 3606073.

It is an arithmetic number, because the mean of its divisors is an integer number (31690048320).

Almost surely, 2^253203163321 is an apocalyptic number.

It is an amenable number.

253203163321 is a deficient number, since it is larger than the sum of its proper divisors (317223239).

253203163321 is a wasteful number, since it uses less digits than its factorization.

253203163321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75335.

The product of its (nonzero) digits is 19440, while the sum is 31.

Adding to 253203163321 its reverse (123361302352), we get a palindrome (376564465673).

The spelling of 253203163321 in words is "two hundred fifty-three billion, two hundred three million, one hundred sixty-three thousand, three hundred twenty-one".