145836213 has 4 divisors (see below), whose sum is σ = 194448288. Its totient is φ = 97224140.

The previous prime is 145836199. The next prime is 145836227. The reversal of 145836213 is 312638541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (145836199) and next prime (145836227).

It is a cyclic number.

It is not a de Polignac number, because 145836213 - 2⁵ = 145836181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145836233) 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, 24306033 + ... + 24306038.

It is an arithmetic number, because the mean of its divisors is an integer number (48612072).

Almost surely, 2^145836213 is an apocalyptic number.

It is an amenable number.

145836213 is a deficient number, since it is larger than the sum of its proper divisors (48612075).

145836213 is an equidigital number, since it uses as much as digits as its factorization.

145836213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48612074.

The product of its digits is 17280, while the sum is 33.

The square root of 145836213 is about 12076.2665174300. The cubic root of 145836213 is about 526.3667643553.

The spelling of 145836213 in words is "one hundred forty-five million, eight hundred thirty-six thousand, two hundred thirteen".