31432410440 has 32 divisors (see below), whose sum is σ = 74883097080. Its totient is φ = 11833377792.

The previous prime is 31432410433. The next prime is 31432410479. The reversal of 31432410440 is 4401423413.

It can be written as a sum of positive squares in 4 ways, for example, as 31011914404 + 420496036 = 176102^2 + 20506^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23111387 + ... + 23112746.

Almost surely, 2^31432410440 is an apocalyptic number.

It is an amenable number.

31432410440 is an abundant number, since it is smaller than the sum of its proper divisors (43450686640).

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

31432410440 is a wasteful number, since it uses less digits than its factorization.

31432410440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46224161 (or 46224157 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 31432410440 its reverse (4401423413), we get a palindrome (35833833853).

The spelling of 31432410440 in words is "thirty-one billion, four hundred thirty-two million, four hundred ten thousand, four hundred forty".