1313123101 has 4 divisors (see below), whose sum is σ = 1313708704. Its totient is φ = 1312537500.

The previous prime is 1313123087. The next prime is 1313123159. The reversal of 1313123101 is 1013213131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1313123101 - 2⁷ = 1313122973 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 (1313121101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289425 + ... + 293926.

It is an arithmetic number, because the mean of its divisors is an integer number (328427176).

Almost surely, 2^1313123101 is an apocalyptic number.

It is an amenable number.

1313123101 is a deficient number, since it is larger than the sum of its proper divisors (585603).

1313123101 is an equidigital number, since it uses as much as digits as its factorization.

1313123101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585602.

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

The square root of 1313123101 is about 36237.0404558650. The cubic root of 1313123101 is about 1095.0530199580.

Adding to 1313123101 its reverse (1013213131), we get a palindrome (2326336232).

The spelling of 1313123101 in words is "one billion, three hundred thirteen million, one hundred twenty-three thousand, one hundred one".