31123023320303 has 2 divisors, whose sum is σ = 31123023320304. Its totient is φ = 31123023320302.

The previous prime is 31123023320299. The next prime is 31123023320321. The reversal of 31123023320303 is 30302332032113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31123023320303 - 2² = 31123023320299 is a prime.

It is a super-2 number, since 2×31123023320303² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31123023320393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15561511660151 + 15561511660152.

It is an arithmetic number, because the mean of its divisors is an integer number (15561511660152).

Almost surely, 2^{31123023320303} is an apocalyptic number.

31123023320303 is a deficient number, since it is larger than the sum of its proper divisors (1).

31123023320303 is an equidigital number, since it uses as much as digits as its factorization.

31123023320303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 31123023320303 its reverse (30302332032113), we get a palindrome (61425355352416).

The spelling of 31123023320303 in words is "thirty-one trillion, one hundred twenty-three billion, twenty-three million, three hundred twenty thousand, three hundred three".