31672673 has 2 divisors, whose sum is σ = 31672674. Its totient is φ = 31672672.

The previous prime is 31672637. The next prime is 31672681. The reversal of 31672673 is 37627613.

It is a happy number.

Together with previous prime (31672637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20729809 + 10942864 = 4553^2 + 3308^2 .

It is a cyclic number.

It is not a de Polignac number, because 31672673 - 2⁶ = 31672609 is a prime.

It is equal to p_1954844 and since 31672673 and 1954844 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (31672073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15836336 + 15836337.

It is an arithmetic number, because the mean of its divisors is an integer number (15836337).

Almost surely, 2^31672673 is an apocalyptic number.

It is an amenable number.

31672673 is a deficient number, since it is larger than the sum of its proper divisors (1).

31672673 is an equidigital number, since it uses as much as digits as its factorization.

31672673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 35.

The square root of 31672673 is about 5627.8479901291. The cubic root of 31672673 is about 316.3939999438.

The spelling of 31672673 in words is "thirty-one million, six hundred seventy-two thousand, six hundred seventy-three".