3145312065 has 32 divisors (see below), whose sum is σ = 5816067840. Its totient is φ = 1421697024.

The previous prime is 3145312057. The next prime is 3145312067. The reversal of 3145312065 is 5602135413.

It is not a de Polignac number, because 3145312065 - 2³ = 3145312057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3145312067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158944 + ... + 177633.

It is an arithmetic number, because the mean of its divisors is an integer number (181752120).

Almost surely, 2^3145312065 is an apocalyptic number.

3145312065 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3145312065 is a deficient number, since it is larger than the sum of its proper divisors (2670755775).

3145312065 is a wasteful number, since it uses less digits than its factorization.

3145312065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336681.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 3145312065 is about 56083.0818072616. The cubic root of 3145312065 is about 1465.1696488026.

Adding to 3145312065 its reverse (5602135413), we get a palindrome (8747447478).

The spelling of 3145312065 in words is "three billion, one hundred forty-five million, three hundred twelve thousand, sixty-five".