12153531 has 16 divisors (see below), whose sum is σ = 17529120. Its totient is φ = 7445760.

The previous prime is 12153517. The next prime is 12153541. The reversal of 12153531 is 13535121.

It is not a de Polignac number, because 12153531 - 2⁶ = 12153467 is a prime.

It is a super-2 number, since 2×12153531² = 295416631535922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12153498 and 12153507.

It is not an unprimeable number, because it can be changed into a prime (12153511) 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, 10405 + ... + 11513.

It is an arithmetic number, because the mean of its divisors is an integer number (1095570).

Almost surely, 2^12153531 is an apocalyptic number.

12153531 is a deficient number, since it is larger than the sum of its proper divisors (5375589).

12153531 is a wasteful number, since it uses less digits than its factorization.

12153531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406.

The product of its digits is 450, while the sum is 21.

The square root of 12153531 is about 3486.1914749480. The cubic root of 12153531 is about 229.9150978376.

Adding to 12153531 its reverse (13535121), we get a palindrome (25688652).

The spelling of 12153531 in words is "twelve million, one hundred fifty-three thousand, five hundred thirty-one".