291214127231 has 4 divisors (see below), whose sum is σ = 298316910864. Its totient is φ = 284111343600.

The previous prime is 291214127161. The next prime is 291214127249. The reversal of 291214127231 is 132721412192.

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

It is a cyclic number.

It is not a de Polignac number, because 291214127231 - 2¹⁸ = 291213865087 is a prime.

It is a super-2 number, since 2×291214127231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 291214127191 and 291214127200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (291214127261) 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, 3551391755 + ... + 3551391836.

It is an arithmetic number, because the mean of its divisors is an integer number (74579227716).

Almost surely, 2^291214127231 is an apocalyptic number.

291214127231 is a deficient number, since it is larger than the sum of its proper divisors (7102783633).

291214127231 is an equidigital number, since it uses as much as digits as its factorization.

291214127231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7102783632.

The product of its digits is 12096, while the sum is 35.

The spelling of 291214127231 in words is "two hundred ninety-one billion, two hundred fourteen million, one hundred twenty-seven thousand, two hundred thirty-one".