1020440331208 has 32 divisors (see below), whose sum is σ = 1925663981760. Its totient is φ = 506930448960.

The previous prime is 1020440331203. The next prime is 1020440331259. The reversal of 1020440331208 is 8021330440201.

It is not an unprimeable number, because it can be changed into a prime (1020440331203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21935413 + ... + 21981883.

It is an arithmetic number, because the mean of its divisors is an integer number (60176999430).

Almost surely, 2^{1020440331208} is an apocalyptic number.

It is an amenable number.

1020440331208 is a deficient number, since it is larger than the sum of its proper divisors (905223650552).

1020440331208 is a wasteful number, since it uses less digits than its factorization.

1020440331208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64117 (or 64113 counting only the distinct ones).

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

Adding to 1020440331208 its reverse (8021330440201), we get a palindrome (9041770771409).

The spelling of 1020440331208 in words is "one trillion, twenty billion, four hundred forty million, three hundred thirty-one thousand, two hundred eight".