31323113020103 has 2 divisors, whose sum is σ = 31323113020104. Its totient is φ = 31323113020102.

The previous prime is 31323113019973. The next prime is 31323113020141. The reversal of 31323113020103 is 30102031132313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31323113020103 - 2¹⁴ = 31323113003719 is a prime.

It is a super-2 number, since 2×31323113020103² (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 (31323113020193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15661556510051 + 15661556510052.

It is an arithmetic number, because the mean of its divisors is an integer number (15661556510052).

Almost surely, 2^{31323113020103} is an apocalyptic number.

31323113020103 is a deficient number, since it is larger than the sum of its proper divisors (1).

31323113020103 is an equidigital number, since it uses as much as digits as its factorization.

31323113020103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 31323113020103 its reverse (30102031132313), we get a palindrome (61425144152416).

The spelling of 31323113020103 in words is "thirty-one trillion, three hundred twenty-three billion, one hundred thirteen million, twenty thousand, one hundred three".