40005431304 has 64 divisors (see below), whose sum is σ = 108673536000. Its totient is φ = 12225764160.

The previous prime is 40005431303. The next prime is 40005431341. The reversal of 40005431304 is 40313450004.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (40005431303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1400884 + ... + 1429155.

It is an arithmetic number, because the mean of its divisors is an integer number (1698024000).

Almost surely, 2^40005431304 is an apocalyptic number.

It is an amenable number.

40005431304 is an abundant number, since it is smaller than the sum of its proper divisors (68668104696).

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

40005431304 is a wasteful number, since it uses less digits than its factorization.

40005431304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830098 (or 2830094 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 40005431304 its reverse (40313450004), we get a palindrome (80318881308).

The spelling of 40005431304 in words is "forty billion, five million, four hundred thirty-one thousand, three hundred four".