145531430 has 32 divisors (see below), whose sum is σ = 289405440. Its totient is φ = 52247520.

The previous prime is 145531417. The next prime is 145531433. The reversal of 145531430 is 34135541.

It is a self number, because there is not a number n which added to its sum of digits gives 145531430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145531433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317 + ... + 17063.

It is an arithmetic number, because the mean of its divisors is an integer number (9043920).

Almost surely, 2^145531430 is an apocalyptic number.

145531430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145531430 is a deficient number, since it is larger than the sum of its proper divisors (143874010).

145531430 is a wasteful number, since it uses less digits than its factorization.

145531430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16844.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 145531430 is about 12063.6408268814. The cubic root of 145531430 is about 525.9998241023. Note that the first 3 decimals are identical.

Adding to 145531430 its reverse (34135541), we get a palindrome (179666971).

The spelling of 145531430 in words is "one hundred forty-five million, five hundred thirty-one thousand, four hundred thirty".