31434030440 has 32 divisors (see below), whose sum is σ = 70749020160. Its totient is φ = 12569620800.

The previous prime is 31434030427. The next prime is 31434030449. The reversal of 31434030440 is 4403043413.

It is not an unprimeable number, because it can be changed into a prime (31434030449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4505 + ... + 250775.

It is an arithmetic number, because the mean of its divisors is an integer number (2210906880).

Almost surely, 2^31434030440 is an apocalyptic number.

It is an amenable number.

31434030440 is an abundant number, since it is smaller than the sum of its proper divisors (39314989720).

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

31434030440 is a wasteful number, since it uses less digits than its factorization.

31434030440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249473 (or 249469 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 31434030440 its reverse (4403043413), we get a palindrome (35837073853).

The spelling of 31434030440 in words is "thirty-one billion, four hundred thirty-four million, thirty thousand, four hundred forty".