131503450 has 48 divisors (see below), whose sum is σ = 264670560. Its totient is φ = 48323520.

The previous prime is 131503447. The next prime is 131503453. The reversal of 131503450 is 54305131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (131503447) and next prime (131503453).

It is not an unprimeable number, because it can be changed into a prime (131503453) 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, 199221 + ... + 199879.

It is an arithmetic number, because the mean of its divisors is an integer number (5513970).

Almost surely, 2^131503450 is an apocalyptic number.

131503450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131503450 is an abundant number, since it is smaller than the sum of its proper divisors (133167110).

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

131503450 is a wasteful number, since it uses less digits than its factorization.

131503450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 131503450 is about 11467.4953673416. The cubic root of 131503450 is about 508.5250863668.

Adding to 131503450 its reverse (54305131), we get a palindrome (185808581).

The spelling of 131503450 in words is "one hundred thirty-one million, five hundred three thousand, four hundred fifty".