103572981 has 6 divisors (see below), whose sum is σ = 149605430. Its totient is φ = 69048648.

The previous prime is 103572967. The next prime is 103572991. The reversal of 103572981 is 189275301.

103572981 is a `hidden beast` number, since 1 + 0 + 3 + 572 + 9 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 59814756 + 43758225 = 7734^2 + 6615^2 .

It is a de Polignac number, because none of the positive numbers 2^k-103572981 is a prime.

It is a super-3 number, since 3×103572981³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103572991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5754046 + ... + 5754063.

Almost surely, 2^103572981 is an apocalyptic number.

It is an amenable number.

103572981 is a deficient number, since it is larger than the sum of its proper divisors (46032449).

103572981 is a wasteful number, since it uses less digits than its factorization.

103572981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11508115 (or 11508112 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 103572981 is about 10177.0811630840. The cubic root of 103572981 is about 469.6224234775.

The spelling of 103572981 in words is "one hundred three million, five hundred seventy-two thousand, nine hundred eighty-one".