107197781 has 4 divisors (see below), whose sum is σ = 107304000. Its totient is φ = 107091564.

The previous prime is 107197771. The next prime is 107197787. The reversal of 107197781 is 187791701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 107197781 - 2¹⁰ = 107196757 is a prime.

It is a super-2 number, since 2×107197781² = 22982728502647922, 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 (107197787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51581 + ... + 53618.

It is an arithmetic number, because the mean of its divisors is an integer number (26826000).

Almost surely, 2^107197781 is an apocalyptic number.

It is an amenable number.

107197781 is a deficient number, since it is larger than the sum of its proper divisors (106219).

107197781 is a wasteful number, since it uses less digits than its factorization.

107197781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106218.

The product of its (nonzero) digits is 24696, while the sum is 41.

The square root of 107197781 is about 10353.6361245700. The cubic root of 107197781 is about 475.0382698621.

The spelling of 107197781 in words is "one hundred seven million, one hundred ninety-seven thousand, seven hundred eighty-one".