40431301440 has 56 divisors (see below), whose sum is σ = 128369385120. Its totient is φ = 10781680128.

The previous prime is 40431301409. The next prime is 40431301447. The reversal of 40431301440 is 4410313404.

It is a super-2 number, since 2×40431301440² (a number of 22 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40431301440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40431301447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21057010 + ... + 21058929.

Almost surely, 2^40431301440 is an apocalyptic number.

40431301440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40431301440 is an abundant number, since it is smaller than the sum of its proper divisors (87938083680).

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

40431301440 is a wasteful number, since it uses less digits than its factorization.

40431301440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42115959 (or 42115949 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 40431301440 its reverse (4410313404), we get a palindrome (44841614844).

The spelling of 40431301440 in words is "forty billion, four hundred thirty-one million, three hundred one thousand, four hundred forty".