1212313311 has 40 divisors (see below), whose sum is σ = 2039397888. Its totient is φ = 711018000.

The previous prime is 1212313301. The next prime is 1212313321. The reversal of 1212313311 is 1133132121.

1212313311 is a `hidden beast` number, since 121 + 231 + 3 + 311 = 666.

1212313311 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1212313301) and next prime (1212313321).

It is not a de Polignac number, because 1212313311 - 2⁶ = 1212313247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212313301) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5676 + ... + 49566.

Almost surely, 2^1212313311 is an apocalyptic number.

1212313311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1212313311 is a deficient number, since it is larger than the sum of its proper divisors (827084577).

1212313311 is a wasteful number, since it uses less digits than its factorization.

1212313311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43945 (or 43936 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1212313311 is about 34818.2898919519. The cubic root of 1212313311 is about 1066.2808869356.

Adding to 1212313311 its reverse (1133132121), we get a palindrome (2345445432).

The spelling of 1212313311 in words is "one billion, two hundred twelve million, three hundred thirteen thousand, three hundred eleven".