103198581 has 12 divisors (see below), whose sum is σ = 152531808. Its totient is φ = 67198824.

The previous prime is 103198577. The next prime is 103198583. The reversal of 103198581 is 185891301.

It is not a de Polignac number, because 103198581 - 2² = 103198577 is a prime.

It is a super-2 number, since 2×103198581² = 21299894240827122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103198583) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132945 + ... + 133718.

It is an arithmetic number, because the mean of its divisors is an integer number (12710984).

Almost surely, 2^103198581 is an apocalyptic number.

It is an amenable number.

103198581 is a deficient number, since it is larger than the sum of its proper divisors (49333227).

103198581 is a wasteful number, since it uses less digits than its factorization.

103198581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266712 (or 266709 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The square root of 103198581 is about 10158.6702377821. The cubic root of 103198581 is about 469.0558699163.

The spelling of 103198581 in words is "one hundred three million, one hundred ninety-eight thousand, five hundred eighty-one".