1201311001 has 8 divisors (see below), whose sum is σ = 1387610784. Its totient is φ = 1027859520.

The previous prime is 1201310989. The next prime is 1201311017. The reversal of 1201311001 is 1001131021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201311001 - 2¹⁷ = 1201179929 is a prime.

It is a super-2 number, since 2×1201311001² = 2886296242247244002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201311031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3211875 + ... + 3212248.

It is an arithmetic number, because the mean of its divisors is an integer number (173451348).

Almost surely, 2^1201311001 is an apocalyptic number.

1201311001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1201311001 is a deficient number, since it is larger than the sum of its proper divisors (186299783).

1201311001 is a wasteful number, since it uses less digits than its factorization.

1201311001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6424151.

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1201311001 is about 34659.9336554472. The cubic root of 1201311001 is about 1063.0454134650.

Adding to 1201311001 its reverse (1001131021), we get a palindrome (2202442022).

The spelling of 1201311001 in words is "one billion, two hundred one million, three hundred eleven thousand, one".