312303111111 has 16 divisors (see below), whose sum is σ = 467252183520. Its totient is φ = 206140665600.

The previous prime is 312303111101. The next prime is 312303111137. The reversal of 312303111111 is 111111303213.

312303111111 is a `hidden beast` number, since 312 + 30 + 311 + 1 + 1 + 11 = 666.

It is not a de Polignac number, because 312303111111 - 2⁶ = 312303111047 is a prime.

It is a super-2 number, since 2×312303111111² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312303111101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57258570 + ... + 57264023.

It is an arithmetic number, because the mean of its divisors is an integer number (29203261470).

Almost surely, 2^312303111111 is an apocalyptic number.

312303111111 is a deficient number, since it is larger than the sum of its proper divisors (154949072409).

312303111111 is a wasteful number, since it uses less digits than its factorization.

312303111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114522703 (or 114522697 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 312303111111 its reverse (111111303213), we get a palindrome (423414414324).

The spelling of 312303111111 in words is "three hundred twelve billion, three hundred three million, one hundred eleven thousand, one hundred eleven".