31280383405012 has 48 divisors (see below), whose sum is σ = 66331182113280. Its totient is φ = 12600084137472.

The previous prime is 31280383405003. The next prime is 31280383405021. The reversal of 31280383405012 is 21050438308213.

It is an interprime number because it is at equal distance from previous prime (31280383405003) and next prime (31280383405021).

It is a congruent number.

It is an unprimeable number.

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, 44477212 + ... + 45175027.

It is an arithmetic number, because the mean of its divisors is an integer number (1381899627360).

Almost surely, 2^{31280383405012} is an apocalyptic number.

It is an amenable number.

31280383405012 is an abundant number, since it is smaller than the sum of its proper divisors (35050798708268).

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

31280383405012 is a wasteful number, since it uses less digits than its factorization.

31280383405012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89653000 (or 89652998 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 31280383405012 in words is "thirty-one trillion, two hundred eighty billion, three hundred eighty-three million, four hundred five thousand, twelve".