145515231203 has 16 divisors (see below), whose sum is σ = 149344183296. Its totient is φ = 141718536960.

The previous prime is 145515231161. The next prime is 145515231269. The reversal of 145515231203 is 302132515541.

145515231203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 145515231203 - 2²⁴ = 145498453987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145515231203.

It is not an unprimeable number, because it can be changed into a prime (145515231503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8137250 + ... + 8155112.

It is an arithmetic number, because the mean of its divisors is an integer number (9334011456).

Almost surely, 2^145515231203 is an apocalyptic number.

145515231203 is a deficient number, since it is larger than the sum of its proper divisors (3828952093).

145515231203 is a wasteful number, since it uses less digits than its factorization.

145515231203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18754.

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 145515231203 its reverse (302132515541), we get a palindrome (447647746744).

The spelling of 145515231203 in words is "one hundred forty-five billion, five hundred fifteen million, two hundred thirty-one thousand, two hundred three".