3061312581 has 16 divisors (see below), whose sum is σ = 4262146560. Its totient is φ = 1950798960.

The previous prime is 3061312487. The next prime is 3061312613. The reversal of 3061312581 is 1852131603.

It is not a de Polignac number, because 3061312581 - 2²⁷ = 2927094853 is a prime.

It is a super-2 number, since 2×3061312581² = 18743269437177763122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3061311581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91150 + ... + 120128.

It is an arithmetic number, because the mean of its divisors is an integer number (266384160).

Almost surely, 2^3061312581 is an apocalyptic number.

It is an amenable number.

3061312581 is a deficient number, since it is larger than the sum of its proper divisors (1200833979).

3061312581 is a wasteful number, since it uses less digits than its factorization.

3061312581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30536.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 3061312581 is about 55329.1295883100. The cubic root of 3061312581 is about 1452.0087230729.

The spelling of 3061312581 in words is "three billion, sixty-one million, three hundred twelve thousand, five hundred eighty-one".