31020102443 has 24 divisors (see below), whose sum is σ = 34387416000. Its totient is φ = 27960183680.

The previous prime is 31020102397. The next prime is 31020102457. The reversal of 31020102443 is 34420102013.

It is not a de Polignac number, because 31020102443 - 2²² = 31015908139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31020102493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12961655 + ... + 12964047.

It is an arithmetic number, because the mean of its divisors is an integer number (1432809000).

Almost surely, 2^31020102443 is an apocalyptic number.

31020102443 is a deficient number, since it is larger than the sum of its proper divisors (3367313557).

31020102443 is a wasteful number, since it uses less digits than its factorization.

31020102443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283 (or 3272 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 31020102443 its reverse (34420102013), we get a palindrome (65440204456).

The spelling of 31020102443 in words is "thirty-one billion, twenty million, one hundred two thousand, four hundred forty-three".