31220413042 has 32 divisors (see below), whose sum is σ = 57753360000. Its totient is φ = 12326145408.

The previous prime is 31220413019. The next prime is 31220413093. The reversal of 31220413042 is 24031402213.

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, 81067 + ... + 262702.

It is an arithmetic number, because the mean of its divisors is an integer number (1804792500).

Almost surely, 2^31220413042 is an apocalyptic number.

31220413042 is a deficient number, since it is larger than the sum of its proper divisors (26532946958).

31220413042 is a wasteful number, since it uses less digits than its factorization.

31220413042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344290.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31220413042 its reverse (24031402213), we get a palindrome (55251815255).

The spelling of 31220413042 in words is "thirty-one billion, two hundred twenty million, four hundred thirteen thousand, forty-two".