312001000133 has 4 divisors (see below), whose sum is σ = 322759655340. Its totient is φ = 301242344928.

The previous prime is 312001000127. The next prime is 312001000147. The reversal of 312001000133 is 331000100213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 157487541409 + 154513458724 = 396847^2 + 393082^2 .

It is a cyclic number.

It is not a de Polignac number, because 312001000133 - 2¹⁰ = 312000999109 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 (312001008133) 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, 5379327560 + ... + 5379327617.

It is an arithmetic number, because the mean of its divisors is an integer number (80689913835).

Almost surely, 2^312001000133 is an apocalyptic number.

It is an amenable number.

312001000133 is a deficient number, since it is larger than the sum of its proper divisors (10758655207).

312001000133 is a wasteful number, since it uses less digits than its factorization.

312001000133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10758655206.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 312001000133 its reverse (331000100213), we get a palindrome (643001100346).

The spelling of 312001000133 in words is "three hundred twelve billion, one million, one hundred thirty-three", and thus it is an aban number.