211131323001 has 12 divisors (see below), whose sum is σ = 313209831012. Its totient is φ = 136950047136.

The previous prime is 211131322991. The next prime is 211131323033. The reversal of 211131323001 is 100323131112.

211131323001 is a `hidden beast` number, since 211 + 131 + 323 + 0 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 95582997225 + 115548325776 = 309165^2 + 339924^2 .

It is not a de Polignac number, because 211131323001 - 2¹⁹ = 211130798713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211131323041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 317013666 + ... + 317014331.

It is an arithmetic number, because the mean of its divisors is an integer number (26100819251).

Almost surely, 2^211131323001 is an apocalyptic number.

It is an amenable number.

211131323001 is a deficient number, since it is larger than the sum of its proper divisors (102078508011).

211131323001 is a wasteful number, since it uses less digits than its factorization.

211131323001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634028040 (or 634028037 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 211131323001 its reverse (100323131112), we get a palindrome (311454454113).

The spelling of 211131323001 in words is "two hundred eleven billion, one hundred thirty-one million, three hundred twenty-three thousand, one".