131117830 has 32 divisors (see below), whose sum is σ = 241118208. Its totient is φ = 51324000.

The previous prime is 131117807. The next prime is 131117837. The reversal of 131117830 is 38711131.

It is a junction number, because it is equal to n+sod(n) for n = 131117795 and 131117804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131117837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106599 + ... + 107821.

It is an arithmetic number, because the mean of its divisors is an integer number (7534944).

Almost surely, 2^131117830 is an apocalyptic number.

131117830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131117830 is a deficient number, since it is larger than the sum of its proper divisors (110000378).

131117830 is a wasteful number, since it uses less digits than its factorization.

131117830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 131117830 is about 11450.6694127461. The cubic root of 131117830 is about 508.0275343126.

Adding to 131117830 its reverse (38711131), we get a palindrome (169828961).

The spelling of 131117830 in words is "one hundred thirty-one million, one hundred seventeen thousand, eight hundred thirty".