116431220 has 24 divisors (see below), whose sum is σ = 249709824. Its totient is φ = 45581216.

The previous prime is 116431219. The next prime is 116431223. The reversal of 116431220 is 22134611.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 116431192 and 116431201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116431223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60992 + ... + 62871.

It is an arithmetic number, because the mean of its divisors is an integer number (10404576).

Almost surely, 2^116431220 is an apocalyptic number.

116431220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

116431220 is an abundant number, since it is smaller than the sum of its proper divisors (133278604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

116431220 is a wasteful number, since it uses less digits than its factorization.

116431220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123919 (or 123917 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 116431220 is about 10790.3299300809. The cubic root of 116431220 is about 488.3034762452.

Adding to 116431220 its reverse (22134611), we get a palindrome (138565831).

The spelling of 116431220 in words is "one hundred sixteen million, four hundred thirty-one thousand, two hundred twenty".