1301203281 has 12 divisors (see below), whose sum is σ = 2018193072. Its totient is φ = 743544648.

The previous prime is 1301203279. The next prime is 1301203289. The reversal of 1301203281 is 1823021031.

It is not a de Polignac number, because 1301203281 - 2¹ = 1301203279 is a prime.

It is a super-2 number, since 2×1301203281² = 3386259956970329922, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1301203289) 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, 4425715 + ... + 4426008.

It is an arithmetic number, because the mean of its divisors is an integer number (168182756).

Almost surely, 2^1301203281 is an apocalyptic number.

It is an amenable number.

1301203281 is a deficient number, since it is larger than the sum of its proper divisors (716989791).

1301203281 is an equidigital number, since it uses as much as digits as its factorization.

1301203281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8851740 (or 8851733 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1301203281 is about 36072.1954003357. The cubic root of 1301203281 is about 1091.7295105856.

The spelling of 1301203281 in words is "one billion, three hundred one million, two hundred three thousand, two hundred eighty-one".