1503231613073 has 4 divisors (see below), whose sum is σ = 1503234192180. Its totient is φ = 1503229033968.

The previous prime is 1503231613069. The next prime is 1503231613127. The reversal of 1503231613073 is 3703161323051.

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 614768901184 + 888462711889 = 784072^2 + 942583^2 .

It is a cyclic number.

It is not a de Polignac number, because 1503231613073 - 2² = 1503231613069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1503231613033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45311 + ... + 1734507.

It is an arithmetic number, because the mean of its divisors is an integer number (375808548045).

Almost surely, 2^{1503231613073} is an apocalyptic number.

It is an amenable number.

1503231613073 is a deficient number, since it is larger than the sum of its proper divisors (2579107).

1503231613073 is an equidigital number, since it uses as much as digits as its factorization.

1503231613073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579106.

The product of its (nonzero) digits is 34020, while the sum is 35.

The spelling of 1503231613073 in words is "one trillion, five hundred three billion, two hundred thirty-one million, six hundred thirteen thousand, seventy-three".