31301231000128 has 14 divisors (see below), whose sum is σ = 62113380266006. Its totient is φ = 15650615500032.

The previous prime is 31301231000111. The next prime is 31301231000129. The reversal of 31301231000128 is 82100013210313.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17249468949504 + 14051762050624 = 4153248^2 + 3748568^2 .

It is not an unprimeable number, because it can be changed into a prime (31301231000129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244540867125 + ... + 244540867252.

Almost surely, 2^{31301231000128} is an apocalyptic number.

It is an amenable number.

31301231000128 is a deficient number, since it is larger than the sum of its proper divisors (30812149265878).

31301231000128 is an equidigital number, since it uses as much as digits as its factorization.

31301231000128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489081734389 (or 489081734379 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 31301231000128 in words is "thirty-one trillion, three hundred one billion, two hundred thirty-one million, one hundred twenty-eight", and thus it is an aban number.