3121859481 has 16 divisors (see below), whose sum is σ = 4746357504. Its totient is φ = 1808135424.

The previous prime is 3121859479. The next prime is 3121859501. The reversal of 3121859481 is 1849581213.

It is not a de Polignac number, because 3121859481 - 2¹ = 3121859479 is a prime.

It is a super-2 number, since 2×3121859481² = 19492013238219178722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3121857481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2353681 + ... + 2355006.

It is an arithmetic number, because the mean of its divisors is an integer number (296647344).

Almost surely, 2^3121859481 is an apocalyptic number.

It is an amenable number.

3121859481 is a deficient number, since it is larger than the sum of its proper divisors (1624498023).

3121859481 is a wasteful number, since it uses less digits than its factorization.

3121859481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4708720.

The product of its digits is 69120, while the sum is 42.

The square root of 3121859481 is about 55873.6027207840. The cubic root of 3121859481 is about 1461.5189485112.

The spelling of 3121859481 in words is "three billion, one hundred twenty-one million, eight hundred fifty-nine thousand, four hundred eighty-one".