1131200213 has 32 divisors (see below), whose sum is σ = 1415014272. Its totient is φ = 888422400.

The previous prime is 1131200197. The next prime is 1131200219. The reversal of 1131200213 is 3120021311.

It is a cyclic number.

It is not a de Polignac number, because 1131200213 - 2⁴ = 1131200197 is a prime.

It is a super-2 number, since 2×1131200213² = 2559227843782490738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131200219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 467978 + ... + 470388.

It is an arithmetic number, because the mean of its divisors is an integer number (44219196).

Almost surely, 2^1131200213 is an apocalyptic number.

1131200213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1131200213 is a deficient number, since it is larger than the sum of its proper divisors (283814059).

1131200213 is a wasteful number, since it uses less digits than its factorization.

1131200213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645.

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

The square root of 1131200213 is about 33633.3199818275. The cubic root of 1131200213 is about 1041.9490733078.

Adding to 1131200213 its reverse (3120021311), we get a palindrome (4251221524).

It can be divided in two parts, 11 and 31200213, that multiplied together give a palindrome (343202343).

The spelling of 1131200213 in words is "one billion, one hundred thirty-one million, two hundred thousand, two hundred thirteen".