312002520123 has 32 divisors (see below), whose sum is σ = 515106003456. Its totient is φ = 163897348608.

The previous prime is 312002520097. The next prime is 312002520127. The reversal of 312002520123 is 321025200213.

It is not a de Polignac number, because 312002520123 - 2⁶ = 312002520059 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 312002520123.

It is not an unprimeable number, because it can be changed into a prime (312002520127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10146936 + ... + 10177637.

It is an arithmetic number, because the mean of its divisors is an integer number (16097062608).

Almost surely, 2^312002520123 is an apocalyptic number.

312002520123 is a deficient number, since it is larger than the sum of its proper divisors (203103483333).

312002520123 is a wasteful number, since it uses less digits than its factorization.

312002520123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20324643.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 312002520123 its reverse (321025200213), we get a palindrome (633027720336).

The spelling of 312002520123 in words is "three hundred twelve billion, two million, five hundred twenty thousand, one hundred twenty-three".