312103202021 has 12 divisors (see below), whose sum is σ = 340537760640. Its totient is φ = 285896042640.

The previous prime is 312103201999. The next prime is 312103202029. The reversal of 312103202021 is 120202301213.

It is not a de Polignac number, because 312103202021 - 2¹⁸ = 312102939877 is a prime.

It is a super-2 number, since 2×312103202021² (a number of 24 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 (312103202029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7026581 + ... + 7070858.

It is an arithmetic number, because the mean of its divisors is an integer number (28378146720).

Almost surely, 2^312103202021 is an apocalyptic number.

It is an amenable number.

312103202021 is a deficient number, since it is larger than the sum of its proper divisors (28434558619).

312103202021 is a wasteful number, since it uses less digits than its factorization.

312103202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14097596 (or 14097583 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 312103202021 its reverse (120202301213), we get a palindrome (432305503234).

The spelling of 312103202021 in words is "three hundred twelve billion, one hundred three million, two hundred two thousand, twenty-one".