12140213211531 has 10 divisors (see below), whose sum is σ = 18135380229692. Its totient is φ = 8093475474300.

The previous prime is 12140213211523. The next prime is 12140213211557. The reversal of 12140213211531 is 13511231204121.

12140213211531 is a `hidden beast` number, since 1 + 2 + 1 + 402 + 13 + 211 + 5 + 31 = 666.

It is not a de Polignac number, because 12140213211531 - 2³ = 12140213211523 is a prime.

It is a super-2 number, since 2×12140213211531² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12140213211495 and 12140213211504.

It is not an unprimeable number, because it can be changed into a prime (12140213211431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 74939587645 + ... + 74939587806.

Almost surely, 2^{12140213211531} is an apocalyptic number.

12140213211531 is a deficient number, since it is larger than the sum of its proper divisors (5995167018161).

12140213211531 is an equidigital number, since it uses as much as digits as its factorization.

12140213211531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149879175463 (or 149879175454 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 12140213211531 its reverse (13511231204121), we get a palindrome (25651444415652).

The spelling of 12140213211531 in words is "twelve trillion, one hundred forty billion, two hundred thirteen million, two hundred eleven thousand, five hundred thirty-one".