31143324101 has 2 divisors, whose sum is σ = 31143324102. Its totient is φ = 31143324100.

The previous prime is 31143324077. The next prime is 31143324127. The reversal of 31143324101 is 10142334113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28628301601 + 2515022500 = 169199^2 + 50150^2 .

It is a cyclic number.

It is not a de Polignac number, because 31143324101 - 2²² = 31139129797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31143324151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15571662050 + 15571662051.

It is an arithmetic number, because the mean of its divisors is an integer number (15571662051).

Almost surely, 2^31143324101 is an apocalyptic number.

It is an amenable number.

31143324101 is a deficient number, since it is larger than the sum of its proper divisors (1).

31143324101 is an equidigital number, since it uses as much as digits as its factorization.

31143324101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31143324101 its reverse (10142334113), we get a palindrome (41285658214).

The spelling of 31143324101 in words is "thirty-one billion, one hundred forty-three million, three hundred twenty-four thousand, one hundred one".