31400264424 has 64 divisors (see below), whose sum is σ = 86225011200. Its totient is φ = 9484744896.

The previous prime is 31400264383. The next prime is 31400264449. The reversal of 31400264424 is 42446200413.

It is a junction number, because it is equal to n+sod(n) for n = 31400264391 and 31400264400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1486474 + ... + 1507449.

It is an arithmetic number, because the mean of its divisors is an integer number (1347265800).

Almost surely, 2^31400264424 is an apocalyptic number.

It is an amenable number.

31400264424 is an abundant number, since it is smaller than the sum of its proper divisors (54824746776).

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

31400264424 is a wasteful number, since it uses less digits than its factorization.

31400264424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993974 (or 2993970 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 31400264424 its reverse (42446200413), we get a palindrome (73846464837).

The spelling of 31400264424 in words is "thirty-one billion, four hundred million, two hundred sixty-four thousand, four hundred twenty-four".