164507831 has 2 divisors, whose sum is σ = 164507832. Its totient is φ = 164507830.

The previous prime is 164507803. The next prime is 164507839. The reversal of 164507831 is 138705461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164507831 - 2⁶ = 164507767 is a prime.

It is a super-2 number, since 2×164507831² = 54125652920649122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 164507791 and 164507800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164507839) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82253915 + 82253916.

It is an arithmetic number, because the mean of its divisors is an integer number (82253916).

Almost surely, 2^164507831 is an apocalyptic number.

164507831 is a deficient number, since it is larger than the sum of its proper divisors (1).

164507831 is an equidigital number, since it uses as much as digits as its factorization.

164507831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 164507831 is about 12826.0606189118. The cubic root of 164507831 is about 547.9347683290.

The spelling of 164507831 in words is "one hundred sixty-four million, five hundred seven thousand, eight hundred thirty-one".