12950231321 has 24 divisors (see below), whose sum is σ = 13923184344. Its totient is φ = 12041809920.

The previous prime is 12950231309. The next prime is 12950231323. The reversal of 12950231321 is 12313205921.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 313998400 + 12636232921 = 17720^2 + 112411^2 .

It is not a de Polignac number, because 12950231321 - 2²² = 12946037017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12950231323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17667071 + ... + 17667803.

It is an arithmetic number, because the mean of its divisors is an integer number (580132681).

Almost surely, 2^12950231321 is an apocalyptic number.

It is an amenable number.

12950231321 is a deficient number, since it is larger than the sum of its proper divisors (972953023).

12950231321 is a wasteful number, since it uses less digits than its factorization.

12950231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1421 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The spelling of 12950231321 in words is "twelve billion, nine hundred fifty million, two hundred thirty-one thousand, three hundred twenty-one".