1131331213103 has 16 divisors (see below), whose sum is σ = 1392476742720. Its totient is φ = 895074782976.

The previous prime is 1131331213063. The next prime is 1131331213157. The reversal of 1131331213103 is 3013121331311.

It is a cyclic number.

It is not a de Polignac number, because 1131331213103 - 2²² = 1131327018799 is a prime.

It is a super-2 number, since 2×1131331213103² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131331213193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1599953 + ... + 2196021.

It is an arithmetic number, because the mean of its divisors is an integer number (87029796420).

Almost surely, 2^{1131331213103} is an apocalyptic number.

1131331213103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1131331213103 is a deficient number, since it is larger than the sum of its proper divisors (261145529617).

1131331213103 is a wasteful number, since it uses less digits than its factorization.

1131331213103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616946.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 1131331213103 its reverse (3013121331311), we get a palindrome (4144452544414).

The spelling of 1131331213103 in words is "one trillion, one hundred thirty-one billion, three hundred thirty-one million, two hundred thirteen thousand, one hundred three".