1231313416 has 8 divisors (see below), whose sum is σ = 2308712670. Its totient is φ = 615656704.

The previous prime is 1231313401. The next prime is 1231313423. The reversal of 1231313416 is 6143131321.

It can be written as a sum of positive squares in only one way, i.e., 1190940100 + 40373316 = 34510^2 + 6354^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1231313416² = 3032265456843178112, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76957081 + ... + 76957096.

Almost surely, 2^1231313416 is an apocalyptic number.

It is an amenable number.

1231313416 is a deficient number, since it is larger than the sum of its proper divisors (1077399254).

1231313416 is a wasteful number, since it uses less digits than its factorization.

1231313416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153914183 (or 153914179 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 1231313416 is about 35090.0757479946. The cubic root of 1231313416 is about 1071.8225020780.

Adding to 1231313416 its reverse (6143131321), we get a palindrome (7374444737).

The spelling of 1231313416 in words is "one billion, two hundred thirty-one million, three hundred thirteen thousand, four hundred sixteen".