1331020231003 has 4 divisors (see below), whose sum is σ = 1333565203288. Its totient is φ = 1328475258720.

The previous prime is 1331020230979. The next prime is 1331020231039. The reversal of 1331020231003 is 3001320201331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1331020231003 - 2³⁷ = 1193581277531 is a prime.

It is a super-2 number, since 2×1331020231003² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331020231603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1272485358 + ... + 1272486403.

It is an arithmetic number, because the mean of its divisors is an integer number (333391300822).

Almost surely, 2^{1331020231003} is an apocalyptic number.

1331020231003 is a deficient number, since it is larger than the sum of its proper divisors (2544972285).

1331020231003 is an equidigital number, since it uses as much as digits as its factorization.

1331020231003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544972284.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 1331020231003 its reverse (3001320201331), we get a palindrome (4332340432334).

The spelling of 1331020231003 in words is "one trillion, three hundred thirty-one billion, twenty million, two hundred thirty-one thousand, three".