53171031 has 16 divisors (see below), whose sum is σ = 72687456. Its totient is φ = 34559616.

The previous prime is 53171023. The next prime is 53171039. The reversal of 53171031 is 13017135.

It is an interprime number because it is at equal distance from previous prime (53171023) and next prime (53171039).

It is not a de Polignac number, because 53171031 - 2³ = 53171023 is a prime.

It is a super-2 number, since 2×53171031² = 5654317075205922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53170989 and 53171007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53171039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26541 + ... + 28473.

It is an arithmetic number, because the mean of its divisors is an integer number (4542966).

Almost surely, 2^53171031 is an apocalyptic number.

53171031 is a deficient number, since it is larger than the sum of its proper divisors (19516425).

53171031 is a wasteful number, since it uses less digits than its factorization.

53171031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162.

The product of its (nonzero) digits is 315, while the sum is 21.

The square root of 53171031 is about 7291.8468853919. The cubic root of 53171031 is about 376.0321927129.

Adding to 53171031 its reverse (13017135), we get a palindrome (66188166).

The spelling of 53171031 in words is "fifty-three million, one hundred seventy-one thousand, thirty-one".