31542424216 has 24 divisors (see below), whose sum is σ = 59986840860. Its totient is φ = 15549062480.

The previous prime is 31542424213. The next prime is 31542424231. The reversal of 31542424216 is 61242424513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31542424213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 350746 + ... + 431401.

Almost surely, 2^31542424216 is an apocalyptic number.

It is an amenable number.

31542424216 is a deficient number, since it is larger than the sum of its proper divisors (28444416644).

31542424216 is an equidigital number, since it uses as much as digits as its factorization.

31542424216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782295 (or 782220 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

Adding to 31542424216 its reverse (61242424513), we get a palindrome (92784848729).

The spelling of 31542424216 in words is "thirty-one billion, five hundred forty-two million, four hundred twenty-four thousand, two hundred sixteen".