12154331 has 12 divisors (see below), whose sum is σ = 14231376. Its totient is φ = 10164960.

The previous prime is 12154321. The next prime is 12154339. The reversal of 12154331 is 13345121.

It is not a de Polignac number, because 12154331 - 2⁶ = 12154267 is a prime.

It is a super-2 number, since 2×12154331² = 295455524115122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12154339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67061 + ... + 67241.

It is an arithmetic number, because the mean of its divisors is an integer number (1185948).

Almost surely, 2^12154331 is an apocalyptic number.

12154331 is a deficient number, since it is larger than the sum of its proper divisors (2077045).

12154331 is an frugal number, since it uses more digits than its factorization.

12154331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 241 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 12154331 is about 3486.3062114507. The cubic root of 12154331 is about 229.9201424084.

Adding to 12154331 its reverse (13345121), we get a palindrome (25499452).

The spelling of 12154331 in words is "twelve million, one hundred fifty-four thousand, three hundred thirty-one".