31218428770 has 64 divisors (see below), whose sum is σ = 59107864320. Its totient is φ = 11848750848.

The previous prime is 31218428713. The next prime is 31218428779. The reversal of 31218428770 is 7782481213.

It is not an unprimeable number, because it can be changed into a prime (31218428779) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 25236592 + ... + 25237828.

It is an arithmetic number, because the mean of its divisors is an integer number (923560380).

Almost surely, 2^31218428770 is an apocalyptic number.

31218428770 is a deficient number, since it is larger than the sum of its proper divisors (27889435550).

31218428770 is a wasteful number, since it uses less digits than its factorization.

31218428770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059.

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 31218428770 in words is "thirty-one billion, two hundred eighteen million, four hundred twenty-eight thousand, seven hundred seventy".