31223301231020 has 24 divisors (see below), whose sum is σ = 65616898211424. Its totient is φ = 12480184182656.

The previous prime is 31223301230999. The next prime is 31223301231113. The reversal of 31223301231020 is 2013210332213.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570991337 + ... + 571046016.

It is an arithmetic number, because the mean of its divisors is an integer number (2734037425476).

Almost surely, 2^{31223301231020} is an apocalyptic number.

It is an amenable number.

31223301231020 is an abundant number, since it is smaller than the sum of its proper divisors (34393596980404).

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

31223301231020 is a wasteful number, since it uses less digits than its factorization.

31223301231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142038729 (or 1142038727 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31223301231020 its reverse (2013210332213), we get a palindrome (33236511563233).

The spelling of 31223301231020 in words is "thirty-one trillion, two hundred twenty-three billion, three hundred one million, two hundred thirty-one thousand, twenty".