1201323011 has 8 divisors (see below), whose sum is σ = 1374207744. Its totient is φ = 1028755080.

The previous prime is 1201323007. The next prime is 1201323029. The reversal of 1201323011 is 1103231021.

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 1201323011 - 2² = 1201323007 is a prime.

It is a super-3 number, since 3×1201323011³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1201323091) 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, 71015 + ... + 86288.

It is an arithmetic number, because the mean of its divisors is an integer number (171775968).

Almost surely, 2^1201323011 is an apocalyptic number.

1201323011 is a deficient number, since it is larger than the sum of its proper divisors (172884733).

1201323011 is a wasteful number, since it uses less digits than its factorization.

1201323011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158401.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1201323011 is about 34660.1069098178. The cubic root of 1201323011 is about 1063.0489560206.

Adding to 1201323011 its reverse (1103231021), we get a palindrome (2304554032).

The spelling of 1201323011 in words is "one billion, two hundred one million, three hundred twenty-three thousand, eleven".