145431021230432 has 96 divisors (see below), whose sum is σ = 348711570450432. Its totient is φ = 58349224226304.

The previous prime is 145431021230419. The next prime is 145431021230441. The reversal of 145431021230432 is 234032120134541.

It is a super-2 number, since 2×145431021230432² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145431021230392 and 145431021230401.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 300056483 + ... + 300540770.

It is an arithmetic number, because the mean of its divisors is an integer number (3632412192192).

Almost surely, 2^{145431021230432} is an apocalyptic number.

It is an amenable number.

145431021230432 is an abundant number, since it is smaller than the sum of its proper divisors (203280549220000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145431021230432 is a wasteful number, since it uses less digits than its factorization.

145431021230432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600597340 (or 600597332 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 145431021230432 its reverse (234032120134541), we get a palindrome (379463141364973).

The spelling of 145431021230432 in words is "one hundred forty-five trillion, four hundred thirty-one billion, twenty-one million, two hundred thirty thousand, four hundred thirty-two".