102031020331020 has 144 divisors (see below), whose sum is σ = 352309483798272. Its totient is φ = 23659367022720.

The previous prime is 102031020330931. The next prime is 102031020331067. The reversal of 102031020331020 is 20133020130201.

102031020331020 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 310 + 2 + 0 + 331 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 102031020330984 and 102031020331002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1120189642 + ... + 1120280721.

It is an arithmetic number, because the mean of its divisors is an integer number (2446593637488).

Almost surely, 2^{102031020331020} is an apocalyptic number.

102031020331020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102031020331020 is an abundant number, since it is smaller than the sum of its proper divisors (250278463467252).

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

102031020331020 is a wasteful number, since it uses less digits than its factorization.

102031020331020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2240470412 (or 2240470407 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 102031020331020 its reverse (20133020130201), we get a palindrome (122164040461221).

The spelling of 102031020331020 in words is "one hundred two trillion, thirty-one billion, twenty million, three hundred thirty-one thousand, twenty".