145313100241321 has 4 divisors (see below), whose sum is σ = 145560652371792. Its totient is φ = 145065548110852.

The previous prime is 145313100241319. The next prime is 145313100241333. The reversal of 145313100241321 is 123142001313541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145313100241321 - 2¹ = 145313100241319 is a prime.

It is a super-2 number, since 2×145313100241321² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145313100241301) 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, 123776064355 + ... + 123776065528.

It is an arithmetic number, because the mean of its divisors is an integer number (36390163092948).

Almost surely, 2^{145313100241321} is an apocalyptic number.

It is an amenable number.

145313100241321 is a deficient number, since it is larger than the sum of its proper divisors (247552130471).

145313100241321 is an equidigital number, since it uses as much as digits as its factorization.

145313100241321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247552130470.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 145313100241321 its reverse (123142001313541), we get a palindrome (268455101554862).

The spelling of 145313100241321 in words is "one hundred forty-five trillion, three hundred thirteen billion, one hundred million, two hundred forty-one thousand, three hundred twenty-one".