312101101133 has 4 divisors (see below), whose sum is σ = 312102249180. Its totient is φ = 312099953088.

The previous prime is 312101101129. The next prime is 312101101141. The reversal of 312101101133 is 331101101213.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 331101101213 = 719 ⋅460502227.

It can be written as a sum of positive squares in 2 ways, for example, as 237892258564 + 74208842569 = 487742^2 + 272413^2 .

It is a cyclic number.

It is not a de Polignac number, because 312101101133 - 2² = 312101101129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312101101183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89141 + ... + 795077.

It is an arithmetic number, because the mean of its divisors is an integer number (78025562295).

Almost surely, 2^312101101133 is an apocalyptic number.

It is an amenable number.

312101101133 is a deficient number, since it is larger than the sum of its proper divisors (1148047).

312101101133 is an equidigital number, since it uses as much as digits as its factorization.

312101101133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148046.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 312101101133 its reverse (331101101213), we get a palindrome (643202202346).

The spelling of 312101101133 in words is "three hundred twelve billion, one hundred one million, one hundred one thousand, one hundred thirty-three".