131450228 has 36 divisors (see below), whose sum is σ = 284689440. Its totient is φ = 52000416.

The previous prime is 131450201. The next prime is 131450237. The reversal of 131450228 is 822054131.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 131450197 and 131450206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9158 + ... + 18621.

It is an arithmetic number, because the mean of its divisors is an integer number (7908040).

Almost surely, 2^131450228 is an apocalyptic number.

It is an amenable number.

131450228 is an abundant number, since it is smaller than the sum of its proper divisors (153239212).

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

131450228 is a wasteful number, since it uses less digits than its factorization.

131450228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27816 (or 27801 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 131450228 is about 11465.1745734638. The cubic root of 131450228 is about 508.4564737837.

It can be divided in two parts, 13 and 1450228, that multiplied together give a square (18852964 = 4342²).

The spelling of 131450228 in words is "one hundred thirty-one million, four hundred fifty thousand, two hundred twenty-eight".