20102313331 has 4 divisors (see below), whose sum is σ = 20102759352. Its totient is φ = 20101867312.

The previous prime is 20102313307. The next prime is 20102313347. The reversal of 20102313331 is 13331320102.

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

It is a cyclic number.

It is not a de Polignac number, because 20102313331 - 2⁵ = 20102313299 is a prime.

It is a super-2 number, since 2×20102313331² (a number of 21 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 = 20102313299 and 20102313308.

It is not an unprimeable number, because it can be changed into a prime (20102313431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146701 + ... + 248446.

It is an arithmetic number, because the mean of its divisors is an integer number (5025689838).

Almost surely, 2^20102313331 is an apocalyptic number.

20102313331 is a deficient number, since it is larger than the sum of its proper divisors (446021).

20102313331 is an equidigital number, since it uses as much as digits as its factorization.

20102313331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446020.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20102313331 its reverse (13331320102), we get a palindrome (33433633433).

The spelling of 20102313331 in words is "twenty billion, one hundred two million, three hundred thirteen thousand, three hundred thirty-one".