312000340120421 has 8 divisors (see below), whose sum is σ = 319640254011288. Its totient is φ = 304361861920000.

The previous prime is 312000340120393. The next prime is 312000340120451. The reversal of 312000340120421 is 124021043000213.

It can be written as a sum of positive squares in 4 ways, for example, as 98718412689796 + 213281927430625 = 9935714^2 + 14604175^2 .

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 312000340120421 - 2¹⁰ = 312000340119397 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 (312000340120451) 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, 358482650 + ... + 359351931.

It is an arithmetic number, because the mean of its divisors is an integer number (39955031751411).

Almost surely, 2^{312000340120421} is an apocalyptic number.

It is an amenable number.

312000340120421 is a deficient number, since it is larger than the sum of its proper divisors (7639913890867).

312000340120421 is a wasteful number, since it uses less digits than its factorization.

312000340120421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717845223.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 312000340120421 its reverse (124021043000213), we get a palindrome (436021383120634).

The spelling of 312000340120421 in words is "three hundred twelve trillion, three hundred forty million, one hundred twenty thousand, four hundred twenty-one".