1316196381 has 4 divisors (see below), whose sum is σ = 1754928512. Its totient is φ = 877464252.

The previous prime is 1316196379. The next prime is 1316196383. The reversal of 1316196381 is 1836916131.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1836916131 = 3 ⋅612305377.

It is an interprime number because it is at equal distance from previous prime (1316196379) and next prime (1316196383).

It is not a de Polignac number, because 1316196381 - 2¹ = 1316196379 is a prime.

It is a super-2 number, since 2×1316196381² = 3464745826714994322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316196383) 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, 219366061 + ... + 219366066.

It is an arithmetic number, because the mean of its divisors is an integer number (438732128).

Almost surely, 2^1316196381 is an apocalyptic number.

It is an amenable number.

1316196381 is a deficient number, since it is larger than the sum of its proper divisors (438732131).

1316196381 is an equidigital number, since it uses as much as digits as its factorization.

1316196381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438732130.

The product of its digits is 23328, while the sum is 39.

The square root of 1316196381 is about 36279.4209022140. The cubic root of 1316196381 is about 1095.9066546875.

The spelling of 1316196381 in words is "one billion, three hundred sixteen million, one hundred ninety-six thousand, three hundred eighty-one".