20230681531 has 2 divisors, whose sum is σ = 20230681532. Its totient is φ = 20230681530.

The previous prime is 20230681511. The next prime is 20230681577. The reversal of 20230681531 is 13518603202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20230681531 - 2⁹ = 20230681019 is a prime.

It is a super-2 number, since 2×20230681531² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20230681493 and 20230681502.

It is not a weakly prime, because it can be changed into another prime (20230681511) 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 as a sum of consecutive naturals, namely, 10115340765 + 10115340766.

It is an arithmetic number, because the mean of its divisors is an integer number (10115340766).

Almost surely, 2^20230681531 is an apocalyptic number.

20230681531 is a deficient number, since it is larger than the sum of its proper divisors (1).

20230681531 is an equidigital number, since it uses as much as digits as its factorization.

20230681531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 20230681531 in words is "twenty billion, two hundred thirty million, six hundred eighty-one thousand, five hundred thirty-one".