1672131 has 4 divisors (see below), whose sum is σ = 2229512. Its totient is φ = 1114752.

The previous prime is 1672129. The next prime is 1672199. The reversal of 1672131 is 1312761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1312761 = 3 ⋅437587.

It is not a de Polignac number, because 1672131 - 2¹ = 1672129 is a prime.

It is a super-2 number, since 2×1672131² = 5592044162322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 1672098 and 1672107.

It is not an unprimeable number, because it can be changed into a prime (1672331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278686 + ... + 278691.

It is an arithmetic number, because the mean of its divisors is an integer number (557378).

2^1672131 is an apocalyptic number.

1672131 is a deficient number, since it is larger than the sum of its proper divisors (557381).

1672131 is an equidigital number, since it uses as much as digits as its factorization.

1672131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557380.

The product of its digits is 252, while the sum is 21.

The square root of 1672131 is about 1293.1090441258. The cubic root of 1672131 is about 118.6925424713.

Adding to 1672131 its reverse (1312761), we get a palindrome (2984892).

The spelling of 1672131 in words is "one million, six hundred seventy-two thousand, one hundred thirty-one".