1003155023201 has 4 divisors (see below), whose sum is σ = 1003171484100. Its totient is φ = 1003138562304.

The previous prime is 1003155023197. The next prime is 1003155023203. The reversal of 1003155023201 is 1023205513001.

It is a happy number.

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 315456339025 + 687698684176 = 561655^2 + 829276^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003155023201 - 2² = 1003155023197 is a prime.

It is a super-4 number, since 4×1003155023201⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1003155023203) 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 3 ways as a sum of consecutive naturals, for example, 8138696 + ... + 8261033.

It is an arithmetic number, because the mean of its divisors is an integer number (250792871025).

Almost surely, 2^{1003155023201} is an apocalyptic number.

It is an amenable number.

1003155023201 is a deficient number, since it is larger than the sum of its proper divisors (16460899).

1003155023201 is an equidigital number, since it uses as much as digits as its factorization.

1003155023201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16460898.

The product of its (nonzero) digits is 900, while the sum is 23.

The spelling of 1003155023201 in words is "one trillion, three billion, one hundred fifty-five million, twenty-three thousand, two hundred one".