12402240231 has 16 divisors (see below), whose sum is σ = 17555270400. Its totient is φ = 7761253248.

The previous prime is 12402240217. The next prime is 12402240247. The reversal of 12402240231 is 13204220421.

It is not a de Polignac number, because 12402240231 - 2¹¹ = 12402238183 is a prime.

It is a super-2 number, since 2×12402240231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12402240198 and 12402240207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402240211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301491 + ... + 340148.

It is an arithmetic number, because the mean of its divisors is an integer number (1097204400).

Almost surely, 2^12402240231 is an apocalyptic number.

12402240231 is a deficient number, since it is larger than the sum of its proper divisors (5153030169).

12402240231 is a wasteful number, since it uses less digits than its factorization.

12402240231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642038.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12402240231 its reverse (13204220421), we get a palindrome (25606460652).

The spelling of 12402240231 in words is "twelve billion, four hundred two million, two hundred forty thousand, two hundred thirty-one".