12150531 has 6 divisors (see below), whose sum is σ = 17550780. Its totient is φ = 8100348.

The previous prime is 12150499. The next prime is 12150533. The reversal of 12150531 is 13505121.

12150531 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12150531 - 2⁵ = 12150499 is a prime.

It is a super-2 number, since 2×12150531² = 295270807163922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12150533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 675021 + ... + 675038.

It is an arithmetic number, because the mean of its divisors is an integer number (2925130).

Almost surely, 2^12150531 is an apocalyptic number.

12150531 is a deficient number, since it is larger than the sum of its proper divisors (5400249).

12150531 is a wasteful number, since it uses less digits than its factorization.

12150531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350065 (or 1350062 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 12150531 is about 3485.7611794270. The cubic root of 12150531 is about 229.8961787253.

Adding to 12150531 its reverse (13505121), we get a palindrome (25655652).

The spelling of 12150531 in words is "twelve million, one hundred fifty thousand, five hundred thirty-one".