117543031 has 4 divisors (see below), whose sum is σ = 118641672. Its totient is φ = 116444392.

The previous prime is 117543017. The next prime is 117543053. The reversal of 117543031 is 130345711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130345711 = 47 ⋅2773313.

It is a cyclic number.

It is not a de Polignac number, because 117543031 - 2¹³ = 117534839 is a prime.

It is a super-2 number, since 2×117543031² = 27632728273333922, 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 = 117542987 and 117543005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117543001) 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, 549160 + ... + 549373.

It is an arithmetic number, because the mean of its divisors is an integer number (29660418).

Almost surely, 2^117543031 is an apocalyptic number.

117543031 is a deficient number, since it is larger than the sum of its proper divisors (1098641).

117543031 is a wasteful number, since it uses less digits than its factorization.

117543031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098640.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 117543031 is about 10841.7263846677. The cubic root of 117543031 is about 489.8528379396.

Adding to 117543031 its reverse (130345711), we get a palindrome (247888742).

The spelling of 117543031 in words is "one hundred seventeen million, five hundred forty-three thousand, thirty-one".