167823121 has 2 divisors, whose sum is σ = 167823122. Its totient is φ = 167823120.

The previous prime is 167823107. The next prime is 167823137. The reversal of 167823121 is 121328761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167340096 + 483025 = 12936^2 + 695^2 .

It is a cyclic number.

It is not a de Polignac number, because 167823121 - 2¹⁵ = 167790353 is a prime.

It is not a weakly prime, because it can be changed into another prime (167823101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83911560 + 83911561.

It is an arithmetic number, because the mean of its divisors is an integer number (83911561).

Almost surely, 2^167823121 is an apocalyptic number.

It is an amenable number.

167823121 is a deficient number, since it is larger than the sum of its proper divisors (1).

167823121 is an equidigital number, since it uses as much as digits as its factorization.

167823121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 31.

The square root of 167823121 is about 12954.6563443420. The cubic root of 167823121 is about 551.5911181683.

The spelling of 167823121 in words is "one hundred sixty-seven million, eight hundred twenty-three thousand, one hundred twenty-one".