312403313341421 has 8 divisors (see below), whose sum is σ = 315194652662904. Its totient is φ = 309612442585600.

The previous prime is 312403313341411. The next prime is 312403313341477. The reversal of 312403313341421 is 124143313304213.

It can be written as a sum of positive squares in 4 ways, for example, as 4672778278921 + 307730535062500 = 2161661^2 + 17542250^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 312403313341421 - 2⁴⁶ = 242034569163757 is a prime.

It is a super-2 number, since 2×312403313341421² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312403313341411) 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, 115801946 + ... + 118468971.

It is an arithmetic number, because the mean of its divisors is an integer number (39399331582863).

Almost surely, 2^{312403313341421} is an apocalyptic number.

It is an amenable number.

312403313341421 is a deficient number, since it is larger than the sum of its proper divisors (2791339321483).

312403313341421 is a wasteful number, since it uses less digits than its factorization.

312403313341421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234282831.

The product of its (nonzero) digits is 62208, while the sum is 35.

Adding to 312403313341421 its reverse (124143313304213), we get a palindrome (436546626645634).

The spelling of 312403313341421 in words is "three hundred twelve trillion, four hundred three billion, three hundred thirteen million, three hundred forty-one thousand, four hundred twenty-one".