40312002120 has 64 divisors (see below), whose sum is σ = 130238781120. Its totient is φ = 9922953984.

The previous prime is 40312002113. The next prime is 40312002169. The reversal of 40312002120 is 2120021304.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 40312002120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12918954 + ... + 12922073.

It is an arithmetic number, because the mean of its divisors is an integer number (2034980955).

Almost surely, 2^40312002120 is an apocalyptic number.

40312002120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40312002120 is an abundant number, since it is smaller than the sum of its proper divisors (89926779000).

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

40312002120 is a wasteful number, since it uses less digits than its factorization.

40312002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25841054 (or 25841050 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 40312002120 its reverse (2120021304), we get a palindrome (42432023424).

The spelling of 40312002120 in words is "forty billion, three hundred twelve million, two thousand, one hundred twenty".