11213031131 has 2 divisors, whose sum is σ = 11213031132. Its totient is φ = 11213031130.

The previous prime is 11213031103. The next prime is 11213031161. The reversal of 11213031131 is 13113031211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11213031131 - 2¹⁰ = 11213030107 is a prime.

It is a super-2 number, since 2×11213031131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11213031161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606515565 + 5606515566.

It is an arithmetic number, because the mean of its divisors is an integer number (5606515566).

Almost surely, 2^11213031131 is an apocalyptic number.

11213031131 is a deficient number, since it is larger than the sum of its proper divisors (1).

11213031131 is an equidigital number, since it uses as much as digits as its factorization.

11213031131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11213031131 its reverse (13113031211), we get a palindrome (24326062342).

The spelling of 11213031131 in words is "eleven billion, two hundred thirteen million, thirty-one thousand, one hundred thirty-one".