31023212102128 has 40 divisors (see below), whose sum is σ = 63559751665536. Its totient is φ = 14645104051200.

The previous prime is 31023212102123. The next prime is 31023212102293. The reversal of 31023212102128 is 82120121232013.

31023212102128 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 31023212102096 and 31023212102105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023212102123) 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, 762745501 + ... + 762786172.

Almost surely, 2^{31023212102128} is an apocalyptic number.

It is an amenable number.

31023212102128 is an abundant number, since it is smaller than the sum of its proper divisors (32536539563408).

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

31023212102128 is a wasteful number, since it uses less digits than its factorization.

31023212102128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525531753 (or 1525531747 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 31023212102128 in words is "thirty-one trillion, twenty-three billion, two hundred twelve million, one hundred two thousand, one hundred twenty-eight".