31142405101 has 2 divisors, whose sum is σ = 31142405102. Its totient is φ = 31142405100.

The previous prime is 31142405093. The next prime is 31142405149. The reversal of 31142405101 is 10150424113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30902124100 + 240281001 = 175790^2 + 15501^2 .

It is a cyclic number.

It is not a de Polignac number, because 31142405101 - 2³ = 31142405093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31142435101) 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 as a sum of consecutive naturals, namely, 15571202550 + 15571202551.

It is an arithmetic number, because the mean of its divisors is an integer number (15571202551).

Almost surely, 2^31142405101 is an apocalyptic number.

It is an amenable number.

31142405101 is a deficient number, since it is larger than the sum of its proper divisors (1).

31142405101 is an equidigital number, since it uses as much as digits as its factorization.

31142405101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 31142405101 its reverse (10150424113), we get a palindrome (41292829214).

The spelling of 31142405101 in words is "thirty-one billion, one hundred forty-two million, four hundred five thousand, one hundred one".