31042200424 has 64 divisors (see below), whose sum is σ = 62965693440. Its totient is φ = 14305082880.

The previous prime is 31042200407. The next prime is 31042200439. The reversal of 31042200424 is 42400224013.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31042200395 and 31042200404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1317354 + ... + 1340710.

It is an arithmetic number, because the mean of its divisors is an integer number (983838960).

Almost surely, 2^31042200424 is an apocalyptic number.

It is an amenable number.

31042200424 is an abundant number, since it is smaller than the sum of its proper divisors (31923493016).

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

31042200424 is a wasteful number, since it uses less digits than its factorization.

31042200424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23650 (or 23646 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 31042200424 its reverse (42400224013), we get a palindrome (73442424437).

The spelling of 31042200424 in words is "thirty-one billion, forty-two million, two hundred thousand, four hundred twenty-four".