1100131213 has 4 divisors (see below), whose sum is σ = 1106209468. Its totient is φ = 1094052960.

The previous prime is 1100131189. The next prime is 1100131231. The reversal of 1100131213 is 3121310011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3121310011 = 89 ⋅35070899.

It can be written as a sum of positive squares in 2 ways, for example, as 343991209 + 756140004 = 18547^2 + 27498^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100131213 - 2⁵ = 1100131181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100131193 and 1100131202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100131283) 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, 3038856 + ... + 3039217.

It is an arithmetic number, because the mean of its divisors is an integer number (276552367).

Almost surely, 2^1100131213 is an apocalyptic number.

It is an amenable number.

1100131213 is a deficient number, since it is larger than the sum of its proper divisors (6078255).

1100131213 is an equidigital number, since it uses as much as digits as its factorization.

1100131213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6078254.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1100131213 is about 33168.2259549708. The cubic root of 1100131213 is about 1032.3211588459.

Adding to 1100131213 its reverse (3121310011), we get a palindrome (4221441224).

The spelling of 1100131213 in words is "one billion, one hundred million, one hundred thirty-one thousand, two hundred thirteen".