31132312000 has 112 divisors (see below), whose sum is σ = 79758357120. Its totient is φ = 12023424000.

The previous prime is 31132311953. The next prime is 31132312033. The reversal of 31132312000 is 21323113.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164905 + ... + 299095.

Almost surely, 2^31132312000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31132312000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39879178560).

31132312000 is an abundant number, since it is smaller than the sum of its proper divisors (48626045120).

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

31132312000 is a wasteful number, since it uses less digits than its factorization.

31132312000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134247 (or 134227 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31132312000 its reverse (21323113), we get a palindrome (31153635113).

It can be divided in two parts, 311323 and 12000, that added together give a palindrome (323323).

The spelling of 31132312000 in words is "thirty-one billion, one hundred thirty-two million, three hundred twelve thousand".