3183135981 has 8 divisors (see below), whose sum is σ = 4493839104. Its totient is φ = 1997261760.

The previous prime is 3183135973. The next prime is 3183136007. The reversal of 3183135981 is 1895313813.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3183135981 - 2³ = 3183135973 is a prime.

It is a super-2 number, since 2×3183135981² = 20264709347073664722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3183135941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31207165 + ... + 31207266.

It is an arithmetic number, because the mean of its divisors is an integer number (561729888).

Almost surely, 2^3183135981 is an apocalyptic number.

It is an amenable number.

3183135981 is a deficient number, since it is larger than the sum of its proper divisors (1310703123).

3183135981 is a wasteful number, since it uses less digits than its factorization.

3183135981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62414451.

The product of its digits is 77760, while the sum is 42.

The square root of 3183135981 is about 56419.2873138256. The cubic root of 3183135981 is about 1471.0193896472.

The spelling of 3183135981 in words is "three billion, one hundred eighty-three million, one hundred thirty-five thousand, nine hundred eighty-one".