102311331231020 has 24 divisors (see below), whose sum is σ = 214854149937168. Its totient is φ = 40924464996800.

The previous prime is 102311331231019. The next prime is 102311331231097. The reversal of 102311331231020 is 20132133113201.

It is a super-2 number, since 2×102311331231020² (a number of 29 digits) contains 22 as substring.

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, 9261935 + ... + 17041305.

It is an arithmetic number, because the mean of its divisors is an integer number (8952256247382).

Almost surely, 2^{102311331231020} is an apocalyptic number.

102311331231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102311331231020 is an abundant number, since it is smaller than the sum of its proper divisors (112542818706148).

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

102311331231020 is a wasteful number, since it uses less digits than its factorization.

102311331231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8436961 (or 8436959 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 102311331231020 its reverse (20132133113201), we get a palindrome (122443464344221).

The spelling of 102311331231020 in words is "one hundred two trillion, three hundred eleven billion, three hundred thirty-one million, two hundred thirty-one thousand, twenty".