31132323210 has 128 divisors (see below), whose sum is σ = 82653903360. Its totient is φ = 7464697856.

The previous prime is 31132323179. The next prime is 31132323241. The reversal of 31132323210 is 1232323113.

It is an interprime number because it is at equal distance from previous prime (31132323179) and next prime (31132323241).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 18215836 + ... + 18217544.

It is an arithmetic number, because the mean of its divisors is an integer number (645733620).

Almost surely, 2^31132323210 is an apocalyptic number.

31132323210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31132323210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41326951680).

31132323210 is an abundant number, since it is smaller than the sum of its proper divisors (51521580150).

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

31132323210 is a wasteful number, since it uses less digits than its factorization.

31132323210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312.

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

Adding to 31132323210 its reverse (1232323113), we get a palindrome (32364646323).

The spelling of 31132323210 in words is "thirty-one billion, one hundred thirty-two million, three hundred twenty-three thousand, two hundred ten".