202311312111001 has 8 divisors (see below), whose sum is σ = 205082974310760. Its totient is φ = 199539657326592.

The previous prime is 202311312110959. The next prime is 202311312111017. The reversal of 202311312111001 is 100111213113202.

It can be written as a sum of positive squares in 4 ways, for example, as 41351343111001 + 160959969000000 = 6430501^2 + 12687000^2 .

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 202311312111001 - 2³⁹ = 201761556297113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202311312111001.

It is not an unprimeable number, because it can be changed into a prime (202311312118001) 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, 74454561 + ... + 77123953.

It is an arithmetic number, because the mean of its divisors is an integer number (25635371788845).

Almost surely, 2^{202311312111001} is an apocalyptic number.

It is an amenable number.

202311312111001 is a deficient number, since it is larger than the sum of its proper divisors (2771662199759).

202311312111001 is a wasteful number, since it uses less digits than its factorization.

202311312111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707675.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 202311312111001 its reverse (100111213113202), we get a palindrome (302422525224203).

The spelling of 202311312111001 in words is "two hundred two trillion, three hundred eleven billion, three hundred twelve million, one hundred eleven thousand, one".