1531130325 has 12 divisors (see below), whose sum is σ = 2531468928. Its totient is φ = 816602800.

The previous prime is 1531130323. The next prime is 1531130399. The reversal of 1531130325 is 5230311351.

It is not a de Polignac number, because 1531130325 - 2¹ = 1531130323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1531130295 and 1531130304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531130323) 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, 10207461 + ... + 10207610.

It is an arithmetic number, because the mean of its divisors is an integer number (210955744).

Almost surely, 2^1531130325 is an apocalyptic number.

1531130325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1531130325 is a deficient number, since it is larger than the sum of its proper divisors (1000338603).

1531130325 is a wasteful number, since it uses less digits than its factorization.

1531130325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20415084 (or 20415079 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 1531130325 is about 39129.6604253091. The cubic root of 1531130325 is about 1152.5790448057.

Adding to 1531130325 its reverse (5230311351), we get a palindrome (6761441676).

The spelling of 1531130325 in words is "one billion, five hundred thirty-one million, one hundred thirty thousand, three hundred twenty-five".