312115213303 has 4 divisors (see below), whose sum is σ = 313732390768. Its totient is φ = 310498035840.

The previous prime is 312115213283. The next prime is 312115213307. The reversal of 312115213303 is 303312511213.

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

It is a cyclic number.

It is not a de Polignac number, because 312115213303 - 2¹³ = 312115205111 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 (312115213307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 808588443 + ... + 808588828.

It is an arithmetic number, because the mean of its divisors is an integer number (78433097692).

Almost surely, 2^312115213303 is an apocalyptic number.

312115213303 is a deficient number, since it is larger than the sum of its proper divisors (1617177465).

312115213303 is a wasteful number, since it uses less digits than its factorization.

312115213303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617177464.

The product of its (nonzero) digits is 1620, while the sum is 25.

Adding to 312115213303 its reverse (303312511213), we get a palindrome (615427724516).

The spelling of 312115213303 in words is "three hundred twelve billion, one hundred fifteen million, two hundred thirteen thousand, three hundred three".