103017981 has 32 divisors (see below), whose sum is σ = 161441280. Its totient is φ = 57758400.

The previous prime is 103017949. The next prime is 103017983. The reversal of 103017981 is 189710301.

It is not a de Polignac number, because 103017981 - 2⁵ = 103017949 is a prime.

It is a super-2 number, since 2×103017981² = 21225408818632722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103017983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25051 + ... + 28871.

It is an arithmetic number, because the mean of its divisors is an integer number (5045040).

Almost surely, 2^103017981 is an apocalyptic number.

103017981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103017981 is a deficient number, since it is larger than the sum of its proper divisors (58423299).

103017981 is a wasteful number, since it uses less digits than its factorization.

103017981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3897.

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 103017981 is about 10149.7773867213. Note that the first 3 decimals coincide. The cubic root of 103017981 is about 468.7820904608.

The spelling of 103017981 in words is "one hundred three million, seventeen thousand, nine hundred eighty-one".