12153531331 has 4 divisors (see below), whose sum is σ = 12412117152. Its totient is φ = 11894945512.

The previous prime is 12153531311. The next prime is 12153531343. The reversal of 12153531331 is 13313535121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13313535121 = 33091 ⋅402331.

It is a cyclic number.

It is not a de Polignac number, because 12153531331 - 2³³ = 3563596739 is a prime.

It is a super-2 number, since 2×12153531331² (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 12153531331.

It is not an unprimeable number, because it can be changed into a prime (12153531311) 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, 129292840 + ... + 129292933.

It is an arithmetic number, because the mean of its divisors is an integer number (3103029288).

Almost surely, 2^12153531331 is an apocalyptic number.

12153531331 is a deficient number, since it is larger than the sum of its proper divisors (258585821).

12153531331 is an equidigital number, since it uses as much as digits as its factorization.

12153531331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258585820.

The product of its digits is 4050, while the sum is 28.

The spelling of 12153531331 in words is "twelve billion, one hundred fifty-three million, five hundred thirty-one thousand, three hundred thirty-one".