167145231 has 16 divisors (see below), whose sum is σ = 243669888. Its totient is φ = 101071200.

The previous prime is 167145191. The next prime is 167145239. The reversal of 167145231 is 132541761.

It is not a de Polignac number, because 167145231 - 2⁷ = 167145103 is a prime.

It is a super-2 number, since 2×167145231² = 55875056492086722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167145239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9720 + ... + 20706.

It is an arithmetic number, because the mean of its divisors is an integer number (15229368).

Almost surely, 2^167145231 is an apocalyptic number.

167145231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

167145231 is a deficient number, since it is larger than the sum of its proper divisors (76524657).

167145231 is a wasteful number, since it uses less digits than its factorization.

167145231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11462.

The product of its digits is 5040, while the sum is 30.

The square root of 167145231 is about 12928.4659182751. The cubic root of 167145231 is about 550.8474330093.

Adding to 167145231 its reverse (132541761), we get a palindrome (299686992).

It can be divided in two parts, 16714 and 5231, that added together give a triangular number (21945 = T₂₀₉).

The spelling of 167145231 in words is "one hundred sixty-seven million, one hundred forty-five thousand, two hundred thirty-one".