172312583 has 2 divisors, whose sum is σ = 172312584. Its totient is φ = 172312582.

The previous prime is 172312579. The next prime is 172312639. The reversal of 172312583 is 385213271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172312583 - 2² = 172312579 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172311583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86156291 + 86156292.

It is an arithmetic number, because the mean of its divisors is an integer number (86156292).

Almost surely, 2^172312583 is an apocalyptic number.

172312583 is a deficient number, since it is larger than the sum of its proper divisors (1).

172312583 is an equidigital number, since it uses as much as digits as its factorization.

172312583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 172312583 is about 13126.7887542994. The cubic root of 172312583 is about 556.4664656312.

The spelling of 172312583 in words is "one hundred seventy-two million, three hundred twelve thousand, five hundred eighty-three".