40031100 has 108 divisors (see below), whose sum is σ = 132135640. Its totient is φ = 10108800.

The previous prime is 40031071. The next prime is 40031113. The reversal of 40031100 is 113004.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15930 + ... + 18270.

Almost surely, 2^40031100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40031100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66067820).

40031100 is an abundant number, since it is smaller than the sum of its proper divisors (92104540).

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

40031100 is a wasteful number, since it uses less digits than its factorization.

40031100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2380 (or 2370 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 40031100 is about 6327.0135134991. The cubic root of 40031100 is about 342.0838001276.

Adding to 40031100 its reverse (113004), we get a palindrome (40144104).

The spelling of 40031100 in words is "forty million, thirty-one thousand, one hundred".