145213339 has 4 divisors (see below), whose sum is σ = 145306656. Its totient is φ = 145120024.

The previous prime is 145213319. The next prime is 145213361. The reversal of 145213339 is 933312541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 933312541 = 7 ⋅133330363.

It is a cyclic number.

It is not a de Polignac number, because 145213339 - 2¹¹ = 145211291 is a prime.

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 145213339.

It is not an unprimeable number, because it can be changed into a prime (145213309) 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, 44284 + ... + 47449.

It is an arithmetic number, because the mean of its divisors is an integer number (36326664).

Almost surely, 2^145213339 is an apocalyptic number.

145213339 is a deficient number, since it is larger than the sum of its proper divisors (93317).

145213339 is an equidigital number, since it uses as much as digits as its factorization.

145213339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93316.

The product of its digits is 9720, while the sum is 31.

The square root of 145213339 is about 12050.4497426445. The cubic root of 145213339 is about 525.6163150551.

The spelling of 145213339 in words is "one hundred forty-five million, two hundred thirteen thousand, three hundred thirty-nine".