146109531 has 4 divisors (see below), whose sum is σ = 194812712. Its totient is φ = 97406352.

The previous prime is 146109503. The next prime is 146109599. The reversal of 146109531 is 135901641.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 146109531 - 2¹⁰ = 146108507 is a prime.

It is a super-2 number, since 2×146109531² = 42695990098079922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146102531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24351586 + ... + 24351591.

It is an arithmetic number, because the mean of its divisors is an integer number (48703178).

Almost surely, 2^146109531 is an apocalyptic number.

146109531 is a deficient number, since it is larger than the sum of its proper divisors (48703181).

146109531 is an equidigital number, since it uses as much as digits as its factorization.

146109531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48703180.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 146109531 is about 12087.5775488722. The cubic root of 146109531 is about 526.6953881059.

The spelling of 146109531 in words is "one hundred forty-six million, one hundred nine thousand, five hundred thirty-one".