102100120321031 has 6 divisors (see below), whose sum is σ = 118769527720440. Its totient is φ = 87514388846556.

The previous prime is 102100120321027. The next prime is 102100120321037. The reversal of 102100120321031 is 130123021001201.

It is not a de Polignac number, because 102100120321031 - 2² = 102100120321027 is a prime.

It is a super-2 number, since 2×102100120321031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102100120321037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1041837962411 + ... + 1041837962508.

It is an arithmetic number, because the mean of its divisors is an integer number (19794921286740).

Almost surely, 2^{102100120321031} is an apocalyptic number.

102100120321031 is a deficient number, since it is larger than the sum of its proper divisors (16669407399409).

102100120321031 is an equidigital number, since it uses as much as digits as its factorization.

102100120321031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083675924933 (or 2083675924926 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 102100120321031 its reverse (130123021001201), we get a palindrome (232223141322232).

The spelling of 102100120321031 in words is "one hundred two trillion, one hundred billion, one hundred twenty million, three hundred twenty-one thousand, thirty-one".