1321545130 has 32 divisors (see below), whose sum is σ = 2425178880. Its totient is φ = 518352960.

The previous prime is 1321545119. The next prime is 1321545131. The reversal of 1321545130 is 315451231.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1321545095 and 1321545104.

It is not an unprimeable number, because it can be changed into a prime (1321545131) 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, 251692 + ... + 256888.

It is an arithmetic number, because the mean of its divisors is an integer number (75786840).

Almost surely, 2^1321545130 is an apocalyptic number.

1321545130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321545130 is a deficient number, since it is larger than the sum of its proper divisors (1103633750).

1321545130 is a wasteful number, since it uses less digits than its factorization.

1321545130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5694.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1321545130 is about 36353.0621818850. The cubic root of 1321545130 is about 1097.3891607182.

Adding to 1321545130 its reverse (315451231), we get a palindrome (1636996361).

The spelling of 1321545130 in words is "one billion, three hundred twenty-one million, five hundred forty-five thousand, one hundred thirty".