145331023 has 4 divisors (see below), whose sum is σ = 145659528. Its totient is φ = 145002520.

The previous prime is 145331009. The next prime is 145331029. The reversal of 145331023 is 320133541.

145331023 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 a cyclic number.

It is not a de Polignac number, because 145331023 - 2¹³ = 145322831 is a prime.

It is a super-2 number, since 2×145331023² = 42242212492453058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145330985 and 145331003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145331029) 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, 163588 + ... + 164473.

It is an arithmetic number, because the mean of its divisors is an integer number (36414882).

Almost surely, 2^145331023 is an apocalyptic number.

145331023 is a deficient number, since it is larger than the sum of its proper divisors (328505).

145331023 is an equidigital number, since it uses as much as digits as its factorization.

145331023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328504.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 145331023 is about 12055.3317250086. The cubic root of 145331023 is about 525.7582669547.

Adding to 145331023 its reverse (320133541), we get a palindrome (465464564).

The spelling of 145331023 in words is "one hundred forty-five million, three hundred thirty-one thousand, twenty-three".