117871031 has 4 divisors (see below), whose sum is σ = 118134000. Its totient is φ = 117608064.

The previous prime is 117871009. The next prime is 117871043. The reversal of 117871031 is 130178711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130178711 = 13 ⋅10013747.

It is a cyclic number.

It is not a de Polignac number, because 117871031 - 2¹⁴ = 117854647 is a prime.

It is a super-2 number, since 2×117871031² = 27787159898005922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117870985 and 117871003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117861031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130811 + ... + 131708.

It is an arithmetic number, because the mean of its divisors is an integer number (29533500).

Almost surely, 2^117871031 is an apocalyptic number.

117871031 is a deficient number, since it is larger than the sum of its proper divisors (262969).

117871031 is an equidigital number, since it uses as much as digits as its factorization.

117871031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262968.

The product of its (nonzero) digits is 1176, while the sum is 29.

The square root of 117871031 is about 10856.8425888930. The cubic root of 117871031 is about 490.3080542435.

The spelling of 117871031 in words is "one hundred seventeen million, eight hundred seventy-one thousand, thirty-one".