312213121203423 has 16 divisors (see below), whose sum is σ = 454170043524096. Its totient is φ = 189202628778240.

The previous prime is 312213121203337. The next prime is 312213121203461. The reversal of 312213121203423 is 324302121312213.

It is not a de Polignac number, because 312213121203423 - 2²¹ = 312213119106271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312213121203223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435753586 + ... + 436469487.

It is an arithmetic number, because the mean of its divisors is an integer number (28385627720256).

Almost surely, 2^{312213121203423} is an apocalyptic number.

312213121203423 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

312213121203423 is a deficient number, since it is larger than the sum of its proper divisors (141956922320673).

312213121203423 is a wasteful number, since it uses less digits than its factorization.

312213121203423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872233934.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 312213121203423 its reverse (324302121312213), we get a palindrome (636515242515636).

The spelling of 312213121203423 in words is "three hundred twelve trillion, two hundred thirteen billion, one hundred twenty-one million, two hundred three thousand, four hundred twenty-three".