2312151111211 has 2 divisors, whose sum is σ = 2312151111212. Its totient is φ = 2312151111210.

The previous prime is 2312151111167. The next prime is 2312151111331. The reversal of 2312151111211 is 1121111512132.

It is a m-pointer prime, because the next prime (2312151111331) can be obtained adding 2312151111211 to its product of digits (120).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2312151111211 is a prime.

It is a super-2 number, since 2×2312151111211² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2312151111911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156075555605 + 1156075555606.

It is an arithmetic number, because the mean of its divisors is an integer number (1156075555606).

Almost surely, 2^{2312151111211} is an apocalyptic number.

2312151111211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312151111211 is an equidigital number, since it uses as much as digits as its factorization.

2312151111211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 22.

Adding to 2312151111211 its reverse (1121111512132), we get a palindrome (3433262623343).

The spelling of 2312151111211 in words is "two trillion, three hundred twelve billion, one hundred fifty-one million, one hundred eleven thousand, two hundred eleven".