40312100 has 72 divisors (see below), whose sum is σ = 96743808. Its totient is φ = 14502400.

The previous prime is 40312093. The next prime is 40312109. The reversal of 40312100 is 121304.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40312109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38585 + ... + 39615.

It is an arithmetic number, because the mean of its divisors is an integer number (1343664).

Almost surely, 2^40312100 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 40312100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48371904).

40312100 is an abundant number, since it is smaller than the sum of its proper divisors (56431708).

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

40312100 is a wasteful number, since it uses less digits than its factorization.

40312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 40312100 is about 6349.1810495528. The cubic root of 40312100 is about 342.8823584299.

Adding to 40312100 its reverse (121304), we get a palindrome (40433404).

The spelling of 40312100 in words is "forty million, three hundred twelve thousand, one hundred".