1201310001 has 16 divisors (see below), whose sum is σ = 1784832000. Its totient is φ = 798572304.

The previous prime is 1201309951. The next prime is 1201310003. The reversal of 1201310001 is 1000131021.

It is not a de Polignac number, because 1201310001 - 2⁶ = 1201309937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1201310003) 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, 54321 + ... + 73166.

It is an arithmetic number, because the mean of its divisors is an integer number (111552000).

Almost surely, 2^1201310001 is an apocalyptic number.

It is an amenable number.

1201310001 is a deficient number, since it is larger than the sum of its proper divisors (583521999).

1201310001 is a wasteful number, since it uses less digits than its factorization.

1201310001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127845 (or 127839 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1201310001 is about 34659.9192295654. The cubic root of 1201310001 is about 1063.0451184968.

Adding to 1201310001 its reverse (1000131021), we get a palindrome (2201441022).

The spelling of 1201310001 in words is "one billion, two hundred one million, three hundred ten thousand, one".