210312031128 has 64 divisors (see below), whose sum is σ = 527925276000. Its totient is φ = 69818176512.

The previous prime is 210312031109. The next prime is 210312031129. The reversal of 210312031128 is 821130213012.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 210312031098 and 210312031107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210312031129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28770738 + ... + 28778046.

Almost surely, 2^210312031128 is an apocalyptic number.

It is an amenable number.

210312031128 is an abundant number, since it is smaller than the sum of its proper divisors (317613244872).

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

210312031128 is a wasteful number, since it uses less digits than its factorization.

210312031128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12044 (or 12040 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 210312031128 in words is "two hundred ten billion, three hundred twelve million, thirty-one thousand, one hundred twenty-eight".