145312302 has 8 divisors (see below), whose sum is σ = 290624616. Its totient is φ = 48437432.

The previous prime is 145312289. The next prime is 145312327. The reversal of 145312302 is 203213541.

It is a sphenic number, since it is the product of 3 distinct primes.

145312302 is an admirable number.

It is a super-2 number, since 2×145312302² = 42231330225078408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12109353 + ... + 12109364.

It is an arithmetic number, because the mean of its divisors is an integer number (36328077).

Almost surely, 2^145312302 is an apocalyptic number.

145312302 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

145312302 is a wasteful number, since it uses less digits than its factorization.

145312302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24218722.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 145312302 is about 12054.5552385810. Note that the first 3 decimals coincide. The cubic root of 145312302 is about 525.7356905794.

Adding to 145312302 its reverse (203213541), we get a palindrome (348525843).

The spelling of 145312302 in words is "one hundred forty-five million, three hundred twelve thousand, three hundred two".