47170231 has 2 divisors, whose sum is σ = 47170232. Its totient is φ = 47170230.

The previous prime is 47170181. The next prime is 47170237. The reversal of 47170231 is 13207174.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47170231 - 2¹³ = 47162039 is a prime.

It is a super-2 number, since 2×47170231² = 4450061385186722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47170196 and 47170205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47170237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23585115 + 23585116.

It is an arithmetic number, because the mean of its divisors is an integer number (23585116).

Almost surely, 2^47170231 is an apocalyptic number.

47170231 is a deficient number, since it is larger than the sum of its proper divisors (1).

47170231 is an equidigital number, since it uses as much as digits as its factorization.

47170231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 47170231 is about 6868.0587504767. The cubic root of 47170231 is about 361.3177809701.

The spelling of 47170231 in words is "forty-seven million, one hundred seventy thousand, two hundred thirty-one".