31340122400 has 36 divisors (see below), whose sum is σ = 76509075762. Its totient is φ = 12536048640.

The previous prime is 31340122393. The next prime is 31340122417. The reversal of 31340122400 is 422104313.

It can be written as a sum of positive squares in 3 ways, for example, as 12453667216 + 18886455184 = 111596^2 + 137428^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19586777 + ... + 19588376.

Almost surely, 2^31340122400 is an apocalyptic number.

It is an amenable number.

31340122400 is an abundant number, since it is smaller than the sum of its proper divisors (45168953362).

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

31340122400 is a wasteful number, since it uses less digits than its factorization.

31340122400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39175173 (or 39175160 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31340122400 its reverse (422104313), we get a palindrome (31762226713).

The spelling of 31340122400 in words is "thirty-one billion, three hundred forty million, one hundred twenty-two thousand, four hundred".