1301145321 has 16 divisors (see below), whose sum is σ = 2024884224. Its totient is φ = 727691664.

The previous prime is 1301145257. The next prime is 1301145343. The reversal of 1301145321 is 1235411031.

It is not a de Polignac number, because 1301145321 - 2⁶ = 1301145257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1301145221) 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, 658155 + ... + 660128.

It is an arithmetic number, because the mean of its divisors is an integer number (126555264).

Almost surely, 2^1301145321 is an apocalyptic number.

It is an amenable number.

1301145321 is a deficient number, since it is larger than the sum of its proper divisors (723738903).

1301145321 is a wasteful number, since it uses less digits than its factorization.

1301145321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318340.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1301145321 is about 36071.3920025274. The cubic root of 1301145321 is about 1091.7133005686.

Adding to 1301145321 its reverse (1235411031), we get a palindrome (2536556352).

The spelling of 1301145321 in words is "one billion, three hundred one million, one hundred forty-five thousand, three hundred twenty-one".