113031420 has 24 divisors (see below), whose sum is σ = 316488144. Its totient is φ = 30141696.

The previous prime is 113031409. The next prime is 113031467. The reversal of 113031420 is 24130311.

It is a super-2 number, since 2×113031420² = 25552203814432800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 113031420.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 941869 + ... + 941988.

It is an arithmetic number, because the mean of its divisors is an integer number (13187006).

Almost surely, 2^113031420 is an apocalyptic number.

113031420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113031420 is an abundant number, since it is smaller than the sum of its proper divisors (203456724).

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

113031420 is a wasteful number, since it uses less digits than its factorization.

113031420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883869 (or 1883867 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 113031420 is about 10631.6235825014. The cubic root of 113031420 is about 483.5036176321.

Adding to 113031420 its reverse (24130311), we get a palindrome (137161731).

The spelling of 113031420 in words is "one hundred thirteen million, thirty-one thousand, four hundred twenty".