32031213312 has 144 divisors (see below), whose sum is σ = 98764117760. Its totient is φ = 9026297856.

The previous prime is 32031213301. The next prime is 32031213437. The reversal of 32031213312 is 21331213023.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351639 + ... + 433257.

Almost surely, 2^32031213312 is an apocalyptic number.

32031213312 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 32031213312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49382058880).

32031213312 is an abundant number, since it is smaller than the sum of its proper divisors (66732904448).

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

32031213312 is an equidigital number, since it uses as much as digits as its factorization.

32031213312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81718 (or 81704 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 32031213312 its reverse (21331213023), we get a palindrome (53362426335).

The spelling of 32031213312 in words is "thirty-two billion, thirty-one million, two hundred thirteen thousand, three hundred twelve".