145403131305 has 16 divisors (see below), whose sum is σ = 233091558144. Its totient is φ = 77399487360.

The previous prime is 145403131303. The next prime is 145403131319. The reversal of 145403131305 is 503131304541.

It is not a de Polignac number, because 145403131305 - 2¹ = 145403131303 is a prime.

It is a super-2 number, since 2×145403131305² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145403131303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9295009 + ... + 9310638.

It is an arithmetic number, because the mean of its divisors is an integer number (14568222384).

Almost surely, 2^145403131305 is an apocalyptic number.

145403131305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145403131305 is a deficient number, since it is larger than the sum of its proper divisors (87688426839).

145403131305 is a wasteful number, since it uses less digits than its factorization.

145403131305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18606176.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 145403131305 its reverse (503131304541), we get a palindrome (648534435846).

The spelling of 145403131305 in words is "one hundred forty-five billion, four hundred three million, one hundred thirty-one thousand, three hundred five".