312001211023 has 4 divisors (see below), whose sum is σ = 314457913600. Its totient is φ = 309544508448.

The previous prime is 312001211009. The next prime is 312001211063. The reversal of 312001211023 is 320112100213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320112100213 = 167483 ⋅1911311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312001211023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312001210988 and 312001211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312001211003) 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, 1228351098 + ... + 1228351351.

It is an arithmetic number, because the mean of its divisors is an integer number (78614478400).

Almost surely, 2^312001211023 is an apocalyptic number.

312001211023 is a deficient number, since it is larger than the sum of its proper divisors (2456702577).

312001211023 is a wasteful number, since it uses less digits than its factorization.

312001211023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2456702576.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 312001211023 its reverse (320112100213), we get a palindrome (632113311236).

The spelling of 312001211023 in words is "three hundred twelve billion, one million, two hundred eleven thousand, twenty-three".