15430131530 has 32 divisors (see below), whose sum is σ = 30341001600. Its totient is φ = 5603209920.

The previous prime is 15430131503. The next prime is 15430131533. The reversal of 15430131530 is 3513103451.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15430131530.

It is not an unprimeable number, because it can be changed into a prime (15430131533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16505 + ... + 176444.

It is an arithmetic number, because the mean of its divisors is an integer number (948156300).

Almost surely, 2^15430131530 is an apocalyptic number.

15430131530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15430131530 is a deficient number, since it is larger than the sum of its proper divisors (14910870070).

15430131530 is a wasteful number, since it uses less digits than its factorization.

15430131530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193694.

The product of its (nonzero) digits is 2700, while the sum is 26.

Adding to 15430131530 its reverse (3513103451), we get a palindrome (18943234981).

The spelling of 15430131530 in words is "fifteen billion, four hundred thirty million, one hundred thirty-one thousand, five hundred thirty".