67631313 has 4 divisors (see below), whose sum is σ = 90175088. Its totient is φ = 45087540.

The previous prime is 67631281. The next prime is 67631357. The reversal of 67631313 is 31313676.

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 not a de Polignac number, because 67631313 - 2⁵ = 67631281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (67631363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11271883 + ... + 11271888.

It is an arithmetic number, because the mean of its divisors is an integer number (22543772).

Almost surely, 2^67631313 is an apocalyptic number.

It is an amenable number.

67631313 is a deficient number, since it is larger than the sum of its proper divisors (22543775).

67631313 is a wasteful number, since it uses less digits than its factorization.

67631313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22543774.

The product of its digits is 6804, while the sum is 30.

The square root of 67631313 is about 8223.8259344419. The cubic root of 67631313 is about 407.4264998479.

Adding to 67631313 its reverse (31313676), we get a palindrome (98944989).

The spelling of 67631313 in words is "sixty-seven million, six hundred thirty-one thousand, three hundred thirteen".