12131411540 has 12 divisors (see below), whose sum is σ = 25475964276. Its totient is φ = 4852564608.

The previous prime is 12131411483. The next prime is 12131411543. The reversal of 12131411540 is 4511413121.

It can be written as a sum of positive squares in 2 ways, for example, as 5793340996 + 6338070544 = 76114^2 + 79612^2 .

It is a super-2 number, since 2×12131411540² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131411543) 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, 303285269 + ... + 303285308.

It is an arithmetic number, because the mean of its divisors is an integer number (2122997023).

Almost surely, 2^12131411540 is an apocalyptic number.

12131411540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12131411540 is an abundant number, since it is smaller than the sum of its proper divisors (13344552736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12131411540 is a wasteful number, since it uses less digits than its factorization.

12131411540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606570586 (or 606570584 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 12131411540 its reverse (4511413121), we get a palindrome (16642824661).

The spelling of 12131411540 in words is "twelve billion, one hundred thirty-one million, four hundred eleven thousand, five hundred forty".