31342340440 has 64 divisors (see below), whose sum is σ = 75305376000. Its totient is φ = 11714142720.

The previous prime is 31342340413. The next prime is 31342340441. The reversal of 31342340440 is 4404324313.

It is a junction number, because it is equal to n+sod(n) for n = 31342340399 and 31342340408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31342340441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399835 + ... + 471754.

It is an arithmetic number, because the mean of its divisors is an integer number (1176646500).

Almost surely, 2^31342340440 is an apocalyptic number.

It is an amenable number.

31342340440 is an abundant number, since it is smaller than the sum of its proper divisors (43963035560).

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

31342340440 is a wasteful number, since it uses less digits than its factorization.

31342340440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871660 (or 871656 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 31342340440 its reverse (4404324313), we get a palindrome (35746664753).

The spelling of 31342340440 in words is "thirty-one billion, three hundred forty-two million, three hundred forty thousand, four hundred forty".