31431612343206 has 16 divisors (see below), whose sum is σ = 63485632852848. Its totient is φ = 10373469420000.

The previous prime is 31431612343189. The next prime is 31431612343223. The reversal of 31431612343206 is 60234321613413.

It is an interprime number because it is at equal distance from previous prime (31431612343189) and next prime (31431612343223).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25933672945 + ... + 25933674156.

It is an arithmetic number, because the mean of its divisors is an integer number (3967852053303).

Almost surely, 2^{31431612343206} is an apocalyptic number.

31431612343206 is an abundant number, since it is smaller than the sum of its proper divisors (32054020509642).

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

31431612343206 is a wasteful number, since it uses less digits than its factorization.

31431612343206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51867347207.

The product of its (nonzero) digits is 186624, while the sum is 39.

Adding to 31431612343206 its reverse (60234321613413), we get a palindrome (91665933956619).

The spelling of 31431612343206 in words is "thirty-one trillion, four hundred thirty-one billion, six hundred twelve million, three hundred forty-three thousand, two hundred six".