147838531 has 4 divisors (see below), whose sum is σ = 147896200. Its totient is φ = 147780864.

The previous prime is 147838489. The next prime is 147838567. The reversal of 147838531 is 135838741.

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

It is a cyclic number.

It is not a de Polignac number, because 147838531 - 2¹³ = 147830339 is a prime.

It is a super-2 number, since 2×147838531² = 43712462496475922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147838631) 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, 24801 + ... + 30178.

It is an arithmetic number, because the mean of its divisors is an integer number (36974050).

Almost surely, 2^147838531 is an apocalyptic number.

147838531 is a deficient number, since it is larger than the sum of its proper divisors (57669).

147838531 is an equidigital number, since it uses as much as digits as its factorization.

147838531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57668.

The product of its digits is 80640, while the sum is 40.

The square root of 147838531 is about 12158.8869145165. The cubic root of 147838531 is about 528.7648119594.

The spelling of 147838531 in words is "one hundred forty-seven million, eight hundred thirty-eight thousand, five hundred thirty-one".