3152981 has 8 divisors (see below), whose sum is σ = 3409560. Its totient is φ = 2898432.

The previous prime is 3152977. The next prime is 3152983. The reversal of 3152981 is 1892513.

It can be written as a sum of positive squares in 4 ways, for example, as 722500 + 2430481 = 850^2 + 1559^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3152981 - 2² = 3152977 is a prime.

It is a super-2 number, since 2×3152981² = 19882578372722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3152983) 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, 5021 + ... + 5613.

It is an arithmetic number, because the mean of its divisors is an integer number (426195).

Almost surely, 2^3152981 is an apocalyptic number.

It is an amenable number.

3152981 is a deficient number, since it is larger than the sum of its proper divisors (256579).

3152981 is a wasteful number, since it uses less digits than its factorization.

3152981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015.

The product of its digits is 2160, while the sum is 29.

The square root of 3152981 is about 1775.6635379486. The cubic root of 3152981 is about 146.6359479972.

The spelling of 3152981 in words is "three million, one hundred fifty-two thousand, nine hundred eighty-one".