131204250 has 48 divisors (see below), whose sum is σ = 354782376. Its totient is φ = 34987200.

The previous prime is 131204221. The next prime is 131204251. The reversal of 131204250 is 52402131.

It can be written as a sum of positive squares in 4 ways, for example, as 52403121 + 78801129 = 7239^2 + 8877^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (131204251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26907 + ... + 31406.

Almost surely, 2^131204250 is an apocalyptic number.

131204250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131204250 is an abundant number, since it is smaller than the sum of its proper divisors (223578126).

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

131204250 is a wasteful number, since it uses less digits than its factorization.

131204250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58336 (or 58323 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 131204250 is about 11454.4423696660. The cubic root of 131204250 is about 508.1391237570.

Adding to 131204250 its reverse (52402131), we get a palindrome (183606381).

The spelling of 131204250 in words is "one hundred thirty-one million, two hundred four thousand, two hundred fifty".