31106880 has 168 divisors, whose sum is σ = 122358912. Its totient is φ = 7105536.

The previous prime is 31106849. The next prime is 31106909. The reversal of 31106880 is 8860113.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19389 + ... + 20931.

Almost surely, 2^31106880 is an apocalyptic number.

31106880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31106880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61179456).

31106880 is an abundant number, since it is smaller than the sum of its proper divisors (91252032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31106880 is a wasteful number, since it uses less digits than its factorization.

31106880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573 (or 1560 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 31106880 is about 5577.3542114519. The cubic root of 31106880 is about 314.4986734551.

Adding to 31106880 its reverse (8860113), we get a palindrome (39966993).

The spelling of 31106880 in words is "thirty-one million, one hundred six thousand, eight hundred eighty".