147531823 has 4 divisors (see below), whose sum is σ = 149609808. Its totient is φ = 145453840.

The previous prime is 147531757. The next prime is 147531851. The reversal of 147531823 is 328135741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328135741 = 313 ⋅1048357.

It is a cyclic number.

It is not a de Polignac number, because 147531823 - 2⁹ = 147531311 is a prime.

It is a super-3 number, since 3×147531823³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147531863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038886 + ... + 1039027.

It is an arithmetic number, because the mean of its divisors is an integer number (37402452).

Almost surely, 2^147531823 is an apocalyptic number.

147531823 is a deficient number, since it is larger than the sum of its proper divisors (2077985).

147531823 is an equidigital number, since it uses as much as digits as its factorization.

147531823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077984.

The product of its digits is 20160, while the sum is 34.

The square root of 147531823 is about 12146.2678630104. The cubic root of 147531823 is about 528.3988977027.

The spelling of 147531823 in words is "one hundred forty-seven million, five hundred thirty-one thousand, eight hundred twenty-three".