31012040334 has 24 divisors (see below), whose sum is σ = 68175230760. Its totient is φ = 9397587760.

The previous prime is 31012040333. The next prime is 31012040347. The reversal of 31012040334 is 43304021013.

It is a self number, because there is not a number n which added to its sum of digits gives 31012040334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012040333) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 21357429 + ... + 21358880.

It is an arithmetic number, because the mean of its divisors is an integer number (2840634615).

Almost surely, 2^31012040334 is an apocalyptic number.

31012040334 is an abundant number, since it is smaller than the sum of its proper divisors (37163190426).

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

31012040334 is a wasteful number, since it uses less digits than its factorization.

31012040334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42716336 (or 42716325 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31012040334 its reverse (43304021013), we get a palindrome (74316061347).

The spelling of 31012040334 in words is "thirty-one billion, twelve million, forty thousand, three hundred thirty-four".