312120111231103 has 32 divisors (see below), whose sum is σ = 373264716625920. Its totient is φ = 255397490000640.

The previous prime is 312120111231091. The next prime is 312120111231107. The reversal of 312120111231103 is 301132111021213.

It is a cyclic number.

It is not a de Polignac number, because 312120111231103 - 2⁹ = 312120111230591 is a prime.

It is a super-2 number, since 2×312120111231103² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312120111231107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59576413 + ... + 64603321.

It is an arithmetic number, because the mean of its divisors is an integer number (11664522394560).

Almost surely, 2^{312120111231103} is an apocalyptic number.

312120111231103 is a deficient number, since it is larger than the sum of its proper divisors (61144605394817).

312120111231103 is a wasteful number, since it uses less digits than its factorization.

312120111231103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5031607.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 312120111231103 its reverse (301132111021213), we get a palindrome (613252222252316).

The spelling of 312120111231103 in words is "three hundred twelve trillion, one hundred twenty billion, one hundred eleven million, two hundred thirty-one thousand, one hundred three".