20010102031 has 2 divisors, whose sum is σ = 20010102032. Its totient is φ = 20010102030.

The previous prime is 20010101963. The next prime is 20010102083. The reversal of 20010102031 is 13020101002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20010102031 - 2⁹ = 20010101519 is a prime.

It is a super-2 number, since 2×20010102031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20010101999 and 20010102017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20010192031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005051015 + 10005051016.

It is an arithmetic number, because the mean of its divisors is an integer number (10005051016).

Almost surely, 2^20010102031 is an apocalyptic number.

20010102031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010102031 is an equidigital number, since it uses as much as digits as its factorization.

20010102031 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 10.

Adding to 20010102031 its reverse (13020101002), we get a palindrome (33030203033).

The spelling of 20010102031 in words is "twenty billion, ten million, one hundred two thousand, thirty-one".