1312331101 has 2 divisors, whose sum is σ = 1312331102. Its totient is φ = 1312331100.

The previous prime is 1312331087. The next prime is 1312331123. The reversal of 1312331101 is 1011332131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1181571876 + 130759225 = 34374^2 + 11435^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312331101 - 2¹³ = 1312322909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312331131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656165550 + 656165551.

It is an arithmetic number, because the mean of its divisors is an integer number (656165551).

Almost surely, 2^1312331101 is an apocalyptic number.

It is an amenable number.

1312331101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312331101 is an equidigital number, since it uses as much as digits as its factorization.

1312331101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1312331101 is about 36226.1107628186. The cubic root of 1312331101 is about 1094.8328181063.

Adding to 1312331101 its reverse (1011332131), we get a palindrome (2323663232).

The spelling of 1312331101 in words is "one billion, three hundred twelve million, three hundred thirty-one thousand, one hundred one".