102020011031 has 2 divisors, whose sum is σ = 102020011032. Its totient is φ = 102020011030.

The previous prime is 102020011003. The next prime is 102020011061. The reversal of 102020011031 is 130110020201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102020011031 is a prime.

It is a super-2 number, since 2×102020011031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102020011061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010005515 + 51010005516.

It is an arithmetic number, because the mean of its divisors is an integer number (51010005516).

Almost surely, 2^102020011031 is an apocalyptic number.

102020011031 is a deficient number, since it is larger than the sum of its proper divisors (1).

102020011031 is an equidigital number, since it uses as much as digits as its factorization.

102020011031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 102020011031 its reverse (130110020201), we get a palindrome (232130031232).

The spelling of 102020011031 in words is "one hundred two billion, twenty million, eleven thousand, thirty-one".