31616423 has 2 divisors, whose sum is σ = 31616424. Its totient is φ = 31616422.

The previous prime is 31616419. The next prime is 31616479. The reversal of 31616423 is 32461613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31616423 - 2² = 31616419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31616392 and 31616401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31616023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15808211 + 15808212.

It is an arithmetic number, because the mean of its divisors is an integer number (15808212).

Almost surely, 2^31616423 is an apocalyptic number.

31616423 is a deficient number, since it is larger than the sum of its proper divisors (1).

31616423 is an equidigital number, since it uses as much as digits as its factorization.

31616423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 31616423 is about 5622.8482995720. The cubic root of 31616423 is about 316.2065859260.

The spelling of 31616423 in words is "thirty-one million, six hundred sixteen thousand, four hundred twenty-three".