3203072145 has 48 divisors (see below), whose sum is σ = 6833229312. Its totient is φ = 1351624320.

The previous prime is 3203072141. The next prime is 3203072177. The reversal of 3203072145 is 5412703023.

It is not a de Polignac number, because 3203072145 - 2² = 3203072141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3203072141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 387001 + ... + 395190.

It is an arithmetic number, because the mean of its divisors is an integer number (142358944).

Almost surely, 2^3203072145 is an apocalyptic number.

3203072145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3203072145 is an abundant number, since it is smaller than the sum of its proper divisors (3630157167).

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

3203072145 is a wasteful number, since it uses less digits than its factorization.

3203072145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782222 (or 782219 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 3203072145 is about 56595.6901627677. The cubic root of 3203072145 is about 1474.0840269139.

Adding to 3203072145 its reverse (5412703023), we get a palindrome (8615775168).

The spelling of 3203072145 in words is "three billion, two hundred three million, seventy-two thousand, one hundred forty-five".