31212431421004 has 24 divisors (see below), whose sum is σ = 56423764252800. Its totient is φ = 15092070512640.

The previous prime is 31212431420983. The next prime is 31212431421029. The reversal of 31212431421004 is 40012413421213.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89148619 + ... + 89498050.

It is an arithmetic number, because the mean of its divisors is an integer number (2350990177200).

Almost surely, 2^{31212431421004} is an apocalyptic number.

It is an amenable number.

31212431421004 is a deficient number, since it is larger than the sum of its proper divisors (25211332831796).

31212431421004 is a wasteful number, since it uses less digits than its factorization.

31212431421004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178648113 (or 178648111 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 31212431421004 its reverse (40012413421213), we get a palindrome (71224844842217).

The spelling of 31212431421004 in words is "thirty-one trillion, two hundred twelve billion, four hundred thirty-one million, four hundred twenty-one thousand, four".