31654423 has 2 divisors, whose sum is σ = 31654424. Its totient is φ = 31654422.

The previous prime is 31654421. The next prime is 31654439. The reversal of 31654423 is 32445613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31654423 - 2¹ = 31654421 is a prime.

Together with 31654421, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 31654391 and 31654400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31654421) 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 as a sum of consecutive naturals, namely, 15827211 + 15827212.

It is an arithmetic number, because the mean of its divisors is an integer number (15827212).

Almost surely, 2^31654423 is an apocalyptic number.

31654423 is a deficient number, since it is larger than the sum of its proper divisors (1).

31654423 is an equidigital number, since it uses as much as digits as its factorization.

31654423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 28.

The square root of 31654423 is about 5626.2263552047. The cubic root of 31654423 is about 316.3332188418. Note that the first 3 decimals are identical.

The spelling of 31654423 in words is "thirty-one million, six hundred fifty-four thousand, four hundred twenty-three".