312438385405 has 8 divisors (see below), whose sum is σ = 375003062784. Its totient is φ = 249899374800.

The previous prime is 312438385403. The next prime is 312438385423. The reversal of 312438385405 is 504583834213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312438385405 - 2¹ = 312438385403 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 (312438385403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6389901 + ... + 6438610.

It is an arithmetic number, because the mean of its divisors is an integer number (46875382848).

Almost surely, 2^312438385405 is an apocalyptic number.

It is an amenable number.

312438385405 is a deficient number, since it is larger than the sum of its proper divisors (62564677379).

312438385405 is a wasteful number, since it uses less digits than its factorization.

312438385405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12833387.

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 312438385405 in words is "three hundred twelve billion, four hundred thirty-eight million, three hundred eighty-five thousand, four hundred five".