1131100020203 has 4 divisors (see below), whose sum is σ = 1131106081560. Its totient is φ = 1131093958848.

The previous prime is 1131100020187. The next prime is 1131100020277. The reversal of 1131100020203 is 3020200011311.

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 1131100020203 - 2⁴ = 1131100020187 is a prime.

It is a super-2 number, since 2×1131100020203² (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 (1131100020103) 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, 2741573 + ... + 3127046.

It is an arithmetic number, because the mean of its divisors is an integer number (282776520390).

Almost surely, 2^{1131100020203} is an apocalyptic number.

1131100020203 is a deficient number, since it is larger than the sum of its proper divisors (6061357).

1131100020203 is an equidigital number, since it uses as much as digits as its factorization.

1131100020203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6061356.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1131100020203 its reverse (3020200011311), we get a palindrome (4151300031514).

The spelling of 1131100020203 in words is "one trillion, one hundred thirty-one billion, one hundred million, twenty thousand, two hundred three".