12933951231 has 4 divisors (see below), whose sum is σ = 17245268312. Its totient is φ = 8622634152.

The previous prime is 12933951229. The next prime is 12933951241. The reversal of 12933951231 is 13215933921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13215933921 = 3 ⋅4405311307.

It is not a de Polignac number, because 12933951231 - 2¹ = 12933951229 is a prime.

It is a super-2 number, since 2×12933951231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12933951231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12933951221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2155658536 + ... + 2155658541.

It is an arithmetic number, because the mean of its divisors is an integer number (4311317078).

Almost surely, 2^12933951231 is an apocalyptic number.

12933951231 is a deficient number, since it is larger than the sum of its proper divisors (4311317081).

12933951231 is an equidigital number, since it uses as much as digits as its factorization.

12933951231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311317080.

The product of its digits is 43740, while the sum is 39.

The spelling of 12933951231 in words is "twelve billion, nine hundred thirty-three million, nine hundred fifty-one thousand, two hundred thirty-one".