20110331323 has 2 divisors, whose sum is σ = 20110331324. Its totient is φ = 20110331322.

The previous prime is 20110331309. The next prime is 20110331341. The reversal of 20110331323 is 32313301102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20110331323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20110331323.

It is not a weakly prime, because it can be changed into another prime (20110331303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055165661 + 10055165662.

It is an arithmetic number, because the mean of its divisors is an integer number (10055165662).

Almost surely, 2^20110331323 is an apocalyptic number.

20110331323 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110331323 is an equidigital number, since it uses as much as digits as its factorization.

20110331323 is an odious number, because the sum of its binary digits is odd.

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

Adding to 20110331323 its reverse (32313301102), we get a palindrome (52423632425).

The spelling of 20110331323 in words is "twenty billion, one hundred ten million, three hundred thirty-one thousand, three hundred twenty-three".