12551906231 has 8 divisors (see below), whose sum is σ = 13120819200. Its totient is φ = 11993244120.

The previous prime is 12551906167. The next prime is 12551906239. The reversal of 12551906231 is 13260915521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12551906231 - 2⁶ = 12551906167 is a prime.

It is a super-2 number, since 2×12551906231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12551906191 and 12551906200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12551906239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2560211 + ... + 2565108.

It is an arithmetic number, because the mean of its divisors is an integer number (1640102400).

Almost surely, 2^12551906231 is an apocalyptic number.

12551906231 is a deficient number, since it is larger than the sum of its proper divisors (568912969).

12551906231 is an equidigital number, since it uses as much as digits as its factorization.

12551906231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125429.

The product of its (nonzero) digits is 16200, while the sum is 35.

The spelling of 12551906231 in words is "twelve billion, five hundred fifty-one million, nine hundred six thousand, two hundred thirty-one".