164237313 has 4 divisors (see below), whose sum is σ = 218983088. Its totient is φ = 109491540.

The previous prime is 164237309. The next prime is 164237327. The reversal of 164237313 is 313732461.

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 164237313 - 2² = 164237309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164237303) 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, 27372883 + ... + 27372888.

It is an arithmetic number, because the mean of its divisors is an integer number (54745772).

Almost surely, 2^164237313 is an apocalyptic number.

It is an amenable number.

164237313 is a deficient number, since it is larger than the sum of its proper divisors (54745775).

164237313 is an equidigital number, since it uses as much as digits as its factorization.

164237313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54745774.

The product of its digits is 9072, while the sum is 30.

The square root of 164237313 is about 12815.5106414064. The cubic root of 164237313 is about 547.6342607702.

Adding to 164237313 its reverse (313732461), we get a palindrome (477969774).

The spelling of 164237313 in words is "one hundred sixty-four million, two hundred thirty-seven thousand, three hundred thirteen".