40304131212 has 48 divisors (see below), whose sum is σ = 98934796800. Its totient is φ = 12751583040.

The previous prime is 40304131187. The next prime is 40304131247. The reversal of 40304131212 is 21213140304.

It is a super-2 number, since 2×40304131212² (a number of 22 digits) contains 22 as substring.

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, 960964 + ... + 1002027.

It is an arithmetic number, because the mean of its divisors is an integer number (2061141600).

Almost surely, 2^40304131212 is an apocalyptic number.

It is an amenable number.

40304131212 is an abundant number, since it is smaller than the sum of its proper divisors (58630665588).

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

40304131212 is a wasteful number, since it uses less digits than its factorization.

40304131212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963086 (or 1963084 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 40304131212 its reverse (21213140304), we get a palindrome (61517271516).

The spelling of 40304131212 in words is "forty billion, three hundred four million, one hundred thirty-one thousand, two hundred twelve".