31020443412 has 48 divisors (see below), whose sum is σ = 83650654080. Its totient is φ = 8763397632.

The previous prime is 31020443411. The next prime is 31020443429. The reversal of 31020443412 is 21434402013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020443411) 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 15 ways as a sum of consecutive naturals, for example, 2067193 + ... + 2082144.

It is an arithmetic number, because the mean of its divisors is an integer number (1742721960).

Almost surely, 2^31020443412 is an apocalyptic number.

It is an amenable number.

31020443412 is an abundant number, since it is smaller than the sum of its proper divisors (52630210668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31020443412 is a wasteful number, since it uses less digits than its factorization.

31020443412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4149440 (or 4149438 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31020443412 its reverse (21434402013), we get a palindrome (52454845425).

The spelling of 31020443412 in words is "thirty-one billion, twenty million, four hundred forty-three thousand, four hundred twelve".