164372431 has 4 divisors (see below), whose sum is σ = 164402992. Its totient is φ = 164341872.

The previous prime is 164372353. The next prime is 164372449. The reversal of 164372431 is 134273461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134273461 = 7 ⋅19181923.

It is a cyclic number.

It is not a de Polignac number, because 164372431 - 2⁹ = 164371919 is a prime.

It is a super-2 number, since 2×164372431² = 54036592145699522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164372393 and 164372402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164372471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4830 + ... + 18763.

It is an arithmetic number, because the mean of its divisors is an integer number (41100748).

Almost surely, 2^164372431 is an apocalyptic number.

164372431 is a deficient number, since it is larger than the sum of its proper divisors (30561).

164372431 is an equidigital number, since it uses as much as digits as its factorization.

164372431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30560.

The product of its digits is 12096, while the sum is 31.

The square root of 164372431 is about 12820.7812164470. The cubic root of 164372431 is about 547.7843991319.

The spelling of 164372431 in words is "one hundred sixty-four million, three hundred seventy-two thousand, four hundred thirty-one".