31467213312 has 80 divisors (see below), whose sum is σ = 83950162560. Its totient is φ = 10474115072.

The previous prime is 31467213301. The next prime is 31467213329. The reversal of 31467213312 is 21331276413.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1090138 + ... + 1118630.

It is an arithmetic number, because the mean of its divisors is an integer number (1049377032).

Almost surely, 2^31467213312 is an apocalyptic number.

31467213312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31467213312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41975081280).

31467213312 is an abundant number, since it is smaller than the sum of its proper divisors (52482949248).

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

31467213312 is an equidigital number, since it uses as much as digits as its factorization.

31467213312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29233 (or 29217 counting only the distinct ones).

The product of its digits is 18144, while the sum is 33.

Adding to 31467213312 its reverse (21331276413), we get a palindrome (52798489725).

The spelling of 31467213312 in words is "thirty-one billion, four hundred sixty-seven million, two hundred thirteen thousand, three hundred twelve".