40515431100 has 144 divisors (see below), whose sum is σ = 119278199040. Its totient is φ = 10616486400.

The previous prime is 40515431093. The next prime is 40515431137. The reversal of 40515431100 is 113451504.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4042896 + ... + 4052904.

Almost surely, 2^40515431100 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 40515431100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59639099520).

40515431100 is an abundant number, since it is smaller than the sum of its proper divisors (78762767940).

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

40515431100 is a wasteful number, since it uses less digits than its factorization.

40515431100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10260 (or 10253 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 40515431100 its reverse (113451504), we get a palindrome (40628882604).

The spelling of 40515431100 in words is "forty billion, five hundred fifteen million, four hundred thirty-one thousand, one hundred".