31240434430 has 8 divisors (see below), whose sum is σ = 56232781992. Its totient is φ = 12496173768.

The previous prime is 31240434383. The next prime is 31240434437. The reversal of 31240434430 is 3443404213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31240434437) 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 3 ways as a sum of consecutive naturals, for example, 1562021712 + ... + 1562021731.

It is an arithmetic number, because the mean of its divisors is an integer number (7029097749).

Almost surely, 2^31240434430 is an apocalyptic number.

31240434430 is a deficient number, since it is larger than the sum of its proper divisors (24992347562).

31240434430 is a wasteful number, since it uses less digits than its factorization.

31240434430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3124043450.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 31240434430 its reverse (3443404213), we get a palindrome (34683838643).

The spelling of 31240434430 in words is "thirty-one billion, two hundred forty million, four hundred thirty-four thousand, four hundred thirty".