31672523 has 2 divisors, whose sum is σ = 31672524. Its totient is φ = 31672522.

The previous prime is 31672517. The next prime is 31672567. The reversal of 31672523 is 32527613.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31672523 - 2⁴ = 31672507 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (31672573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15836261 + 15836262.

It is an arithmetic number, because the mean of its divisors is an integer number (15836262).

Almost surely, 2^31672523 is an apocalyptic number.

31672523 is a deficient number, since it is larger than the sum of its proper divisors (1).

31672523 is an equidigital number, since it uses as much as digits as its factorization.

31672523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 29.

The square root of 31672523 is about 5627.8346635273. The cubic root of 31672523 is about 316.3935004682.

The spelling of 31672523 in words is "thirty-one million, six hundred seventy-two thousand, five hundred twenty-three".