312030221303 has 16 divisors (see below), whose sum is σ = 326214120960. Its totient is φ = 297898243104.

The previous prime is 312030221281. The next prime is 312030221339. The reversal of 312030221303 is 303122030213.

It is a cyclic number.

It is not a de Polignac number, because 312030221303 - 2¹⁸ = 312029959159 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 (312030221353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40821800 + ... + 40829442.

It is an arithmetic number, because the mean of its divisors is an integer number (20388382560).

Almost surely, 2^312030221303 is an apocalyptic number.

312030221303 is a deficient number, since it is larger than the sum of its proper divisors (14183899657).

312030221303 is a wasteful number, since it uses less digits than its factorization.

312030221303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10798.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 312030221303 its reverse (303122030213), we get a palindrome (615152251516).

The spelling of 312030221303 in words is "three hundred twelve billion, thirty million, two hundred twenty-one thousand, three hundred three".