31311442420103 has 2 divisors, whose sum is σ = 31311442420104. Its totient is φ = 31311442420102.

The previous prime is 31311442420079. The next prime is 31311442420127. The reversal of 31311442420103 is 30102424411313.

It is a balanced prime because it is at equal distance from previous prime (31311442420079) and next prime (31311442420127).

It is a cyclic number.

It is not a de Polignac number, because 31311442420103 - 2²⁰ = 31311441371527 is a prime.

It is a super-2 number, since 2×31311442420103² (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 (31311442420163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15655721210051 + 15655721210052.

It is an arithmetic number, because the mean of its divisors is an integer number (15655721210052).

Almost surely, 2^{31311442420103} is an apocalyptic number.

31311442420103 is a deficient number, since it is larger than the sum of its proper divisors (1).

31311442420103 is an equidigital number, since it uses as much as digits as its factorization.

31311442420103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 31311442420103 its reverse (30102424411313), we get a palindrome (61413866831416).

The spelling of 31311442420103 in words is "thirty-one trillion, three hundred eleven billion, four hundred forty-two million, four hundred twenty thousand, one hundred three".