3123101021312 has 16 divisors (see below), whose sum is σ = 6221802816150. Its totient is φ = 1561550510592.

The previous prime is 3123101021309. The next prime is 3123101021329. The reversal of 3123101021312 is 2131201013213.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2218121720896 + 904979300416 = 1489336^2 + 951304^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-3 number, since 3×3123101021312³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12199613237 + ... + 12199613492.

Almost surely, 2^{3123101021312} is an apocalyptic number.

3123101021312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3123101021312 is a deficient number, since it is larger than the sum of its proper divisors (3098701794838).

3123101021312 is an equidigital number, since it uses as much as digits as its factorization.

3123101021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24399226743 (or 24399226731 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 3123101021312 its reverse (2131201013213), we get a palindrome (5254302034525).

The spelling of 3123101021312 in words is "three trillion, one hundred twenty-three billion, one hundred one million, twenty-one thousand, three hundred twelve".