102020102031 has 4 divisors (see below), whose sum is σ = 136026802712. Its totient is φ = 68013401352.

The previous prime is 102020102021. The next prime is 102020102033. The reversal of 102020102031 is 130201020201.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-102020102031 is a prime.

It is a super-2 number, since 2×102020102031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102020101998 and 102020102016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020102033) 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 3 ways as a sum of consecutive naturals, for example, 17003350336 + ... + 17003350341.

It is an arithmetic number, because the mean of its divisors is an integer number (34006700678).

Almost surely, 2^102020102031 is an apocalyptic number.

102020102031 is a deficient number, since it is larger than the sum of its proper divisors (34006700681).

102020102031 is an equidigital number, since it uses as much as digits as its factorization.

102020102031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34006700680.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 102020102031 its reverse (130201020201), we get a palindrome (232221122232).

The spelling of 102020102031 in words is "one hundred two billion, twenty million, one hundred two thousand, thirty-one".