306701145 has 24 divisors (see below), whose sum is σ = 536886792. Its totient is φ = 161952000.

The previous prime is 306701123. The next prime is 306701149. The reversal of 306701145 is 541107603.

It can be written as a sum of positive squares in 4 ways, for example, as 197205849 + 109495296 = 14043^2 + 10464^2 .

It is not a de Polignac number, because 306701145 - 2¹¹ = 306699097 is a prime.

It is a super-2 number, since 2×306701145² = 188131184688622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (306701149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29196 + ... + 38285.

It is an arithmetic number, because the mean of its divisors is an integer number (22370283).

Almost surely, 2^306701145 is an apocalyptic number.

It is an amenable number.

306701145 is a deficient number, since it is larger than the sum of its proper divisors (230185647).

306701145 is a wasteful number, since it uses less digits than its factorization.

306701145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67593 (or 67590 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 306701145 is about 17512.8851135385. The cubic root of 306701145 is about 674.3806994662.

Adding to 306701145 its reverse (541107603), we get a palindrome (847808748).

The spelling of 306701145 in words is "three hundred six million, seven hundred one thousand, one hundred forty-five".