312203020212305 has 4 divisors (see below), whose sum is σ = 374643624254772. Its totient is φ = 249762416169840.

The previous prime is 312203020212277. The next prime is 312203020212331. The reversal of 312203020212305 is 503212020302213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 220539399623761 + 91663620588544 = 14850569^2 + 9574112^2 .

It is not a de Polignac number, because 312203020212305 - 2⁸ = 312203020212049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31220302021226 + ... + 31220302021235.

It is an arithmetic number, because the mean of its divisors is an integer number (93660906063693).

Almost surely, 2^{312203020212305} is an apocalyptic number.

It is an amenable number.

312203020212305 is a deficient number, since it is larger than the sum of its proper divisors (62440604042467).

312203020212305 is an equidigital number, since it uses as much as digits as its factorization.

312203020212305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62440604042466.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 312203020212305 its reverse (503212020302213), we get a palindrome (815415040514518).

The spelling of 312203020212305 in words is "three hundred twelve trillion, two hundred three billion, twenty million, two hundred twelve thousand, three hundred five".