211231287134 has 8 divisors (see below), whose sum is σ = 362110777968. Its totient is φ = 90527694480.

The previous prime is 211231287131. The next prime is 211231287139. The reversal of 211231287134 is 431782132112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 211231287094 and 211231287103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211231287131) 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, 7543974527 + ... + 7543974554.

It is an arithmetic number, because the mean of its divisors is an integer number (45263847246).

Almost surely, 2^211231287134 is an apocalyptic number.

211231287134 is a deficient number, since it is larger than the sum of its proper divisors (150879490834).

211231287134 is a wasteful number, since it uses less digits than its factorization.

211231287134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15087949090.

The product of its digits is 16128, while the sum is 35.

The spelling of 211231287134 in words is "two hundred eleven billion, two hundred thirty-one million, two hundred eighty-seven thousand, one hundred thirty-four".