31322134140 has 96 divisors (see below), whose sum is σ = 96622364160. Its totient is φ = 7518048000.

The previous prime is 31322134133. The next prime is 31322134159. The reversal of 31322134140 is 4143122313.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31322134140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168280 + ... + 301599.

It is an arithmetic number, because the mean of its divisors is an integer number (1006482960).

Almost surely, 2^31322134140 is an apocalyptic number.

31322134140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31322134140 is an abundant number, since it is smaller than the sum of its proper divisors (65300230020).

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

31322134140 is a wasteful number, since it uses less digits than its factorization.

31322134140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470003 (or 470001 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31322134140 its reverse (4143122313), we get a palindrome (35465256453).

It can be divided in two parts, 313221 and 34140, that added together give a triangular number (347361 = T₈₃₃).

The spelling of 31322134140 in words is "thirty-one billion, three hundred twenty-two million, one hundred thirty-four thousand, one hundred forty".