201672331 has 4 divisors (see below), whose sum is σ = 230482672. Its totient is φ = 172861992.

The previous prime is 201672313. The next prime is 201672337. The reversal of 201672331 is 133276102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133276102 = 2 ⋅66638051.

It is a cyclic number.

It is not a de Polignac number, because 201672331 - 2⁷ = 201672203 is a prime.

It is a super-2 number, since 2×201672331² = 81343458181947122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201672296 and 201672305.

It is not an unprimeable number, because it can be changed into a prime (201672337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14405160 + ... + 14405173.

It is an arithmetic number, because the mean of its divisors is an integer number (57620668).

Almost surely, 2^201672331 is an apocalyptic number.

201672331 is a deficient number, since it is larger than the sum of its proper divisors (28810341).

201672331 is an equidigital number, since it uses as much as digits as its factorization.

201672331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28810340.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 201672331 is about 14201.1383698632. The cubic root of 201672331 is about 586.4290007027.

It can be divided in two parts, 2016 and 72331, that added together give a palindrome (74347).

The spelling of 201672331 in words is "two hundred one million, six hundred seventy-two thousand, three hundred thirty-one".