1131013211 has 4 divisors (see below), whose sum is σ = 1134045792. Its totient is φ = 1127980632.

The previous prime is 1131013189. The next prime is 1131013223. The reversal of 1131013211 is 1123101311.

It is a happy number.

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 1131013211 - 2¹⁴ = 1130996827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131013291) 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, 1515731 + ... + 1516476.

It is an arithmetic number, because the mean of its divisors is an integer number (283511448).

Almost surely, 2^1131013211 is an apocalyptic number.

1131013211 is a deficient number, since it is larger than the sum of its proper divisors (3032581).

1131013211 is an equidigital number, since it uses as much as digits as its factorization.

1131013211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032580.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1131013211 is about 33630.5398559107. The cubic root of 1131013211 is about 1041.8916542655.

Adding to 1131013211 its reverse (1123101311), we get a palindrome (2254114522).

The spelling of 1131013211 in words is "one billion, one hundred thirty-one million, thirteen thousand, two hundred eleven".