1312392101 has 6 divisors (see below), whose sum is σ = 1318250790. Its totient is φ = 1306559336.

The previous prime is 1312392097. The next prime is 1312392119. The reversal of 1312392101 is 1012932131.

It can be written as a sum of positive squares in only one way, i.e., 1237984225 + 74407876 = 35185^2 + 8626^2 .

It is not a de Polignac number, because 1312392101 - 2² = 1312392097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312392901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38795 + ... + 64263.

It is an arithmetic number, because the mean of its divisors is an integer number (219708465).

Almost surely, 2^1312392101 is an apocalyptic number.

It is an amenable number.

1312392101 is a deficient number, since it is larger than the sum of its proper divisors (5858689).

1312392101 is an frugal number, since it uses more digits than its factorization.

1312392101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25923 (or 25696 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1312392101 is about 36226.9526871913. The cubic root of 1312392101 is about 1094.8497812459.

The spelling of 1312392101 in words is "one billion, three hundred twelve million, three hundred ninety-two thousand, one hundred one".