2356981 has 8 divisors (see below), whose sum is σ = 2582784. Its totient is φ = 2133120.

The previous prime is 2356973. The next prime is 2356997. The reversal of 2356981 is 1896532.

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

It is not a de Polignac number, because 2356981 - 2³ = 2356973 is a prime.

It is a super-2 number, since 2×2356981² = 11110718868722, 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 (2356901) 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, 3580 + ... + 4186.

It is an arithmetic number, because the mean of its divisors is an integer number (322848).

2^2356981 is an apocalyptic number.

It is an amenable number.

2356981 is a deficient number, since it is larger than the sum of its proper divisors (225803).

2356981 is a wasteful number, since it uses less digits than its factorization.

2356981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971.

The product of its digits is 12960, while the sum is 34.

The square root of 2356981 is about 1535.2462343220. The cubic root of 2356981 is about 133.0818084515.

The spelling of 2356981 in words is "two million, three hundred fifty-six thousand, nine hundred eighty-one".