1312101899 has 2 divisors, whose sum is σ = 1312101900. Its totient is φ = 1312101898.

The previous prime is 1312101893. The next prime is 1312101919. The reversal of 1312101899 is 9981012131.

It is a weak prime.

It is an emirp because it is prime and its reverse (9981012131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1312101899 - 2⁴ = 1312101883 is a prime.

It is a super-2 number, since 2×1312101899² = 3443222786718812402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1312101893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656050949 + 656050950.

It is an arithmetic number, because the mean of its divisors is an integer number (656050950).

Almost surely, 2^1312101899 is an apocalyptic number.

1312101899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312101899 is an equidigital number, since it uses as much as digits as its factorization.

1312101899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 1312101899 is about 36222.9471329984. The cubic root of 1312101899 is about 1094.7690759399.

The spelling of 1312101899 in words is "one billion, three hundred twelve million, one hundred one thousand, eight hundred ninety-nine".