145641532431 has 4 divisors (see below), whose sum is σ = 194188709912. Its totient is φ = 97094354952.

The previous prime is 145641532411. The next prime is 145641532441. The reversal of 145641532431 is 134235146541.

145641532431 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.

It is not a de Polignac number, because 145641532431 - 2⁶ = 145641532367 is a prime.

It is a super-2 number, since 2×145641532431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145641532431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145641532411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24273588736 + ... + 24273588741.

It is an arithmetic number, because the mean of its divisors is an integer number (48547177478).

Almost surely, 2^145641532431 is an apocalyptic number.

145641532431 is a deficient number, since it is larger than the sum of its proper divisors (48547177481).

145641532431 is an equidigital number, since it uses as much as digits as its factorization.

145641532431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48547177480.

The product of its digits is 172800, while the sum is 39.

Adding to 145641532431 its reverse (134235146541), we get a palindrome (279876678972).

The spelling of 145641532431 in words is "one hundred forty-five billion, six hundred forty-one million, five hundred thirty-two thousand, four hundred thirty-one".