145302233531 has 32 divisors (see below), whose sum is σ = 179362799616. Its totient is φ = 114624720000.

The previous prime is 145302233521. The next prime is 145302233543. The reversal of 145302233531 is 135332203541.

It is not a de Polignac number, because 145302233531 - 2¹⁸ = 145301971387 is a prime.

It is a super-2 number, since 2×145302233531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145302233521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76433681 + ... + 76435581.

It is an arithmetic number, because the mean of its divisors is an integer number (5605087488).

Almost surely, 2^145302233531 is an apocalyptic number.

145302233531 is a deficient number, since it is larger than the sum of its proper divisors (34060566085).

145302233531 is a wasteful number, since it uses less digits than its factorization.

145302233531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3963.

The product of its (nonzero) digits is 32400, while the sum is 32.

The spelling of 145302233531 in words is "one hundred forty-five billion, three hundred two million, two hundred thirty-three thousand, five hundred thirty-one".