111701961 has 48 divisors (see below), whose sum is σ = 194248704. Its totient is φ = 60473952.

The previous prime is 111701921. The next prime is 111701963. The reversal of 111701961 is 169107111.

It is not a de Polignac number, because 111701961 - 2⁷ = 111701833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111701963) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 183720 + ... + 184326.

It is an arithmetic number, because the mean of its divisors is an integer number (4046848).

Almost surely, 2^111701961 is an apocalyptic number.

It is an amenable number.

111701961 is a deficient number, since it is larger than the sum of its proper divisors (82546743).

111701961 is a wasteful number, since it uses less digits than its factorization.

111701961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770 (or 767 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 27.

The square root of 111701961 is about 10568.9148449592. The cubic root of 111701961 is about 481.6005037306.

It can be divided in two parts, 11170 and 1961, that added together give a palindrome (13131).

The spelling of 111701961 in words is "one hundred eleven million, seven hundred one thousand, nine hundred sixty-one".