672167231 has 2 divisors, whose sum is σ = 672167232. Its totient is φ = 672167230.

The previous prime is 672167219. The next prime is 672167239. The reversal of 672167231 is 132761276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 672167231 - 2¹⁴ = 672150847 is a prime.

It is a super-2 number, since 2×672167231² = 903617572860414722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 672167191 and 672167200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672167239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336083615 + 336083616.

It is an arithmetic number, because the mean of its divisors is an integer number (336083616).

Almost surely, 2^672167231 is an apocalyptic number.

672167231 is a deficient number, since it is larger than the sum of its proper divisors (1).

672167231 is an equidigital number, since it uses as much as digits as its factorization.

672167231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 35.

The square root of 672167231 is about 25926.1881309228. The cubic root of 672167231 is about 875.9764798248.

It can be divided in two parts, 67216 and 7231, that added together give a palindrome (74447).

The spelling of 672167231 in words is "six hundred seventy-two million, one hundred sixty-seven thousand, two hundred thirty-one".