1201001312311 has 16 divisors (see below), whose sum is σ = 1252698289920. Its totient is φ = 1150555875840.

The previous prime is 1201001312309. The next prime is 1201001312351. The reversal of 1201001312311 is 1132131001021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1201001312311 - 2¹ = 1201001312309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201001312351) 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, 429901 + ... + 1608358.

It is an arithmetic number, because the mean of its divisors is an integer number (78293643120).

Almost surely, 2^{1201001312311} is an apocalyptic number.

1201001312311 is a deficient number, since it is larger than the sum of its proper divisors (51696977609).

1201001312311 is a wasteful number, since it uses less digits than its factorization.

1201001312311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038566.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1201001312311 its reverse (1132131001021), we get a palindrome (2333132313332).

The spelling of 1201001312311 in words is "one trillion, two hundred one billion, one million, three hundred twelve thousand, three hundred eleven".