12312031303 has 16 divisors (see below), whose sum is σ = 14548123296. Its totient is φ = 10272032640.

The previous prime is 12312031301. The next prime is 12312031349. The reversal of 12312031303 is 30313021321.

It is a cyclic number.

It is not a de Polignac number, because 12312031303 - 2¹ = 12312031301 is a prime.

It is a super-2 number, since 2×12312031303² (a number of 21 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 (12312031301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224100 + ... + 273577.

It is an arithmetic number, because the mean of its divisors is an integer number (909257706).

Almost surely, 2^12312031303 is an apocalyptic number.

12312031303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12312031303 is a deficient number, since it is larger than the sum of its proper divisors (2236091993).

12312031303 is a wasteful number, since it uses less digits than its factorization.

12312031303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497874.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 12312031303 its reverse (30313021321), we get a palindrome (42625052624).

The spelling of 12312031303 in words is "twelve billion, three hundred twelve million, thirty-one thousand, three hundred three".