150012531 has 24 divisors (see below), whose sum is σ = 221229840. Its totient is φ = 97929216.

The previous prime is 150012529. The next prime is 150012557. The reversal of 150012531 is 135210051.

It is not a de Polignac number, because 150012531 - 2¹ = 150012529 is a prime.

It is a super-2 number, since 2×150012531² = 45007518914051922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (150012521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115735 + ... + 117023.

It is an arithmetic number, because the mean of its divisors is an integer number (9217910).

Almost surely, 2^150012531 is an apocalyptic number.

150012531 is a deficient number, since it is larger than the sum of its proper divisors (71217309).

150012531 is a wasteful number, since it uses less digits than its factorization.

150012531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555 (or 1552 counting only the distinct ones).

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

The square root of 150012531 is about 12247.9602791649. The cubic root of 150012531 is about 531.3440799288.

Adding to 150012531 its reverse (135210051), we get a palindrome (285222582).

The spelling of 150012531 in words is "one hundred fifty million, twelve thousand, five hundred thirty-one".