211232310131 has 4 divisors (see below), whose sum is σ = 211358874000. Its totient is φ = 211105746264.

The previous prime is 211232310103. The next prime is 211232310143. The reversal of 211232310131 is 131013232112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211232310131 is a prime.

It is a super-3 number, since 3×211232310131³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211232310101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63279431 + ... + 63282768.

It is an arithmetic number, because the mean of its divisors is an integer number (52839718500).

Almost surely, 2^211232310131 is an apocalyptic number.

211232310131 is a deficient number, since it is larger than the sum of its proper divisors (126563869).

211232310131 is a wasteful number, since it uses less digits than its factorization.

211232310131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126563868.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 211232310131 its reverse (131013232112), we get a palindrome (342245542243).

The spelling of 211232310131 in words is "two hundred eleven billion, two hundred thirty-two million, three hundred ten thousand, one hundred thirty-one".