40321431332 has 48 divisors (see below), whose sum is σ = 86885551872. Its totient is φ = 15944100480.

The previous prime is 40321431299. The next prime is 40321431361. The reversal of 40321431332 is 23313412304.

It is a super-2 number, since 2×40321431332² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 817238 + ... + 865170.

It is an arithmetic number, because the mean of its divisors is an integer number (1810115664).

Almost surely, 2^40321431332 is an apocalyptic number.

It is an amenable number.

40321431332 is an abundant number, since it is smaller than the sum of its proper divisors (46564120540).

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

40321431332 is a wasteful number, since it uses less digits than its factorization.

40321431332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50268 (or 50266 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 40321431332 its reverse (23313412304), we get a palindrome (63634843636).

The spelling of 40321431332 in words is "forty billion, three hundred twenty-one million, four hundred thirty-one thousand, three hundred thirty-two".