145520034313 has 4 divisors (see below), whose sum is σ = 147905608708. Its totient is φ = 143134459920.

The previous prime is 145520034277. The next prime is 145520034377. The reversal of 145520034313 is 313430025541.

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 4934781504 + 140585252809 = 70248^2 + 374947^2 .

It is a cyclic number.

It is not a de Polignac number, because 145520034313 - 2¹⁷ = 145519903241 is a prime.

It is a super-3 number, since 3×145520034313³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145520034613) 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, 1192787106 + ... + 1192787227.

It is an arithmetic number, because the mean of its divisors is an integer number (36976402177).

Almost surely, 2^145520034313 is an apocalyptic number.

It is an amenable number.

145520034313 is a deficient number, since it is larger than the sum of its proper divisors (2385574395).

145520034313 is an equidigital number, since it uses as much as digits as its factorization.

145520034313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385574394.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 145520034313 its reverse (313430025541), we get a palindrome (458950059854).

The spelling of 145520034313 in words is "one hundred forty-five billion, five hundred twenty million, thirty-four thousand, three hundred thirteen".