501431130 has 24 divisors (see below), whose sum is σ = 1303721172. Its totient is φ = 133714944.

The previous prime is 501431113. The next prime is 501431131. The reversal of 501431130 is 31134105.

501431130 is a `hidden beast` number, since 501 + 4 + 31 + 130 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 491375889 + 10055241 = 22167^2 + 3171^2 .

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 (501431131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2785639 + ... + 2785818.

Almost surely, 2^501431130 is an apocalyptic number.

501431130 is an abundant number, since it is smaller than the sum of its proper divisors (802290042).

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

501431130 is a wasteful number, since it uses less digits than its factorization.

501431130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5571470 (or 5571467 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 501431130 is about 22392.6579485330. The cubic root of 501431130 is about 794.4570637291.

Adding to 501431130 its reverse (31134105), we get a palindrome (532565235).

The spelling of 501431130 in words is "five hundred one million, four hundred thirty-one thousand, one hundred thirty".