131418028 has 12 divisors (see below), whose sum is σ = 262836112. Its totient is φ = 56322000.

The previous prime is 131418013. The next prime is 131418029. The reversal of 131418028 is 820814131.

131418028 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 4693501 = 131418028 / (1 + 3 + 1 + 4 + 1 + 8 + 0 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 131417987 and 131418005.

It is not an unprimeable number, because it can be changed into a prime (131418029) 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, 2346723 + ... + 2346778.

Almost surely, 2^131418028 is an apocalyptic number.

It is an amenable number.

131418028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131418028 is a wasteful number, since it uses less digits than its factorization.

131418028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4693512 (or 4693510 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 131418028 is about 11463.7702349620. The cubic root of 131418028 is about 508.4149532890.

The spelling of 131418028 in words is "one hundred thirty-one million, four hundred eighteen thousand, twenty-eight".