1213341131 has 4 divisors (see below), whose sum is σ = 1216778712. Its totient is φ = 1209903552.

The previous prime is 1213341113. The next prime is 1213341163. The reversal of 1213341131 is 1311433121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1311433121 = 317 ⋅4137013.

It is a cyclic number.

It is not a de Polignac number, because 1213341131 - 2¹⁸ = 1213078987 is a prime.

It is a super-2 number, since 2×1213341131² = 2944393400352718322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213341631) 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, 1718261 + ... + 1718966.

It is an arithmetic number, because the mean of its divisors is an integer number (304194678).

Almost surely, 2^1213341131 is an apocalyptic number.

1213341131 is a deficient number, since it is larger than the sum of its proper divisors (3437581).

1213341131 is an equidigital number, since it uses as much as digits as its factorization.

1213341131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437580.

The product of its digits is 216, while the sum is 20.

The square root of 1213341131 is about 34833.0465362994. The cubic root of 1213341131 is about 1066.5821388856.

Adding to 1213341131 its reverse (1311433121), we get a palindrome (2524774252).

The spelling of 1213341131 in words is "one billion, two hundred thirteen million, three hundred forty-one thousand, one hundred thirty-one".