2197103981 has 8 divisors (see below), whose sum is σ = 2202808440. Its totient is φ = 2191408128.

The previous prime is 2197103977. The next prime is 2197103983. The reversal of 2197103981 is 1893017912.

It is a happy number.

2197103981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1986128356 + 210975625 = 44566^2 + 14525^2 .

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 2197103981 - 2² = 2197103977 is a prime.

It is a super-2 number, since 2×2197103981² = 9654531806652096722, 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 (2197103983) 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, 1088285 + ... + 1090301.

It is an arithmetic number, because the mean of its divisors is an integer number (275351055).

Almost surely, 2^2197103981 is an apocalyptic number.

It is an amenable number.

2197103981 is a deficient number, since it is larger than the sum of its proper divisors (5704459).

2197103981 is a wasteful number, since it uses less digits than its factorization.

2197103981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4303.

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 2197103981 is about 46873.2757656215. The cubic root of 2197103981 is about 1300.0205087494.

The spelling of 2197103981 in words is "two billion, one hundred ninety-seven million, one hundred three thousand, nine hundred eighty-one".