164312331 has 8 divisors (see below), whose sum is σ = 224178240. Its totient is φ = 106993992.

The previous prime is 164312321. The next prime is 164312333. The reversal of 164312331 is 133213461.

It is a happy number.

164312331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164312331 - 2¹³ = 164304139 is a prime.

It is a super-2 number, since 2×164312331² = 53997084237307122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164312333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636741 + ... + 636998.

It is an arithmetic number, because the mean of its divisors is an integer number (28022280).

Almost surely, 2^164312331 is an apocalyptic number.

164312331 is a deficient number, since it is larger than the sum of its proper divisors (59865909).

164312331 is a wasteful number, since it uses less digits than its factorization.

164312331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273785.

The product of its digits is 1296, while the sum is 24.

The square root of 164312331 is about 12818.4371512287. The cubic root of 164312331 is about 547.7176282924.

Adding to 164312331 its reverse (133213461), we get a palindrome (297525792).

The spelling of 164312331 in words is "one hundred sixty-four million, three hundred twelve thousand, three hundred thirty-one".