145520431303 has 8 divisors (see below), whose sum is σ = 162118252800. Its totient is φ = 129694601568.

The previous prime is 145520431271. The next prime is 145520431319. The reversal of 145520431303 is 303134025541.

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 145520431303 - 2⁵ = 145520431271 is a prime.

It is a super-2 number, since 2×145520431303² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145520431393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192997543 + ... + 192998296.

It is an arithmetic number, because the mean of its divisors is an integer number (20264781600).

Almost surely, 2^145520431303 is an apocalyptic number.

145520431303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

145520431303 is a deficient number, since it is larger than the sum of its proper divisors (16597821497).

145520431303 is a wasteful number, since it uses less digits than its factorization.

145520431303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385995881.

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

Adding to 145520431303 its reverse (303134025541), we get a palindrome (448654456844).

The spelling of 145520431303 in words is "one hundred forty-five billion, five hundred twenty million, four hundred thirty-one thousand, three hundred three".