145823331 has 12 divisors (see below), whose sum is σ = 206542232. Its totient is φ = 91496448.

The previous prime is 145823329. The next prime is 145823341. The reversal of 145823331 is 133328541.

It is not a de Polignac number, because 145823331 - 2¹ = 145823329 is a prime.

It is a super-2 number, since 2×145823331² = 42528887727871122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145823311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83230 + ... + 84963.

Almost surely, 2^145823331 is an apocalyptic number.

145823331 is a deficient number, since it is larger than the sum of its proper divisors (60718901).

145823331 is a wasteful number, since it uses less digits than its factorization.

145823331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168230 (or 168213 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 145823331 is about 12075.7331454450. The cubic root of 145823331 is about 526.3512655612.

The spelling of 145823331 in words is "one hundred forty-five million, eight hundred twenty-three thousand, three hundred thirty-one".