2312211131 has 2 divisors, whose sum is σ = 2312211132. Its totient is φ = 2312211130.

The previous prime is 2312211103. The next prime is 2312211173. The reversal of 2312211131 is 1311122132.

2312211131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2312211131 - 2¹⁴ = 2312194747 is a prime.

It is a super-2 number, since 2×2312211131² = 10692640628640598322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2312211101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156105565 + 1156105566.

It is an arithmetic number, because the mean of its divisors is an integer number (1156105566).

Almost surely, 2^2312211131 is an apocalyptic number.

2312211131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312211131 is an equidigital number, since it uses as much as digits as its factorization.

2312211131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 17.

The square root of 2312211131 is about 48085.4565435330. The cubic root of 2312211131 is about 1322.3380530514.

Adding to 2312211131 its reverse (1311122132), we get a palindrome (3623333263).

The spelling of 2312211131 in words is "two billion, three hundred twelve million, two hundred eleven thousand, one hundred thirty-one".