154012531 has 12 divisors (see below), whose sum is σ = 162537760. Its totient is φ = 145910160.

The previous prime is 154012511. The next prime is 154012543. The reversal of 154012531 is 135210451.

It is a happy number.

154012531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 154012531 - 2⁷ = 154012403 is a prime.

It is a super-2 number, since 2×154012531² = 47439719410051922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154012511) 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, 56326 + ... + 58996.

Almost surely, 2^154012531 is an apocalyptic number.

154012531 is a deficient number, since it is larger than the sum of its proper divisors (8525229).

154012531 is a wasteful number, since it uses less digits than its factorization.

154012531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826 (or 2803 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 154012531 is about 12410.1785240987. The cubic root of 154012531 is about 536.0253791261.

Adding to 154012531 its reverse (135210451), we get a palindrome (289222982).

The spelling of 154012531 in words is "one hundred fifty-four million, twelve thousand, five hundred thirty-one".