147531129 has 4 divisors (see below), whose sum is σ = 196708176. Its totient is φ = 98354084.

The previous prime is 147531121. The next prime is 147531169. The reversal of 147531129 is 921135741.

147531129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 921135741 = 3 ⋅307045247.

It is a cyclic number.

It is not a de Polignac number, because 147531129 - 2³ = 147531121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 147531129.

It is not an unprimeable number, because it can be changed into a prime (147531121) 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, 24588519 + ... + 24588524.

It is an arithmetic number, because the mean of its divisors is an integer number (49177044).

Almost surely, 2^147531129 is an apocalyptic number.

It is an amenable number.

147531129 is a deficient number, since it is larger than the sum of its proper divisors (49177047).

147531129 is an equidigital number, since it uses as much as digits as its factorization.

147531129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49177046.

The product of its digits is 7560, while the sum is 33.

The square root of 147531129 is about 12146.2392945306. The cubic root of 147531129 is about 528.3980691596.

The spelling of 147531129 in words is "one hundred forty-seven million, five hundred thirty-one thousand, one hundred twenty-nine".