231141491 has 8 divisors (see below), whose sum is σ = 268104960. Its totient is φ = 195163848.

The previous prime is 231141473. The next prime is 231141497. The reversal of 231141491 is 194141132.

It is a happy number.

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 231141491 - 2¹⁴ = 231125107 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 231141491.

It is not an unprimeable number, because it can be changed into a prime (231141497) 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, 245951 + ... + 246888.

It is an arithmetic number, because the mean of its divisors is an integer number (33513120).

Almost surely, 2^231141491 is an apocalyptic number.

231141491 is a deficient number, since it is larger than the sum of its proper divisors (36963469).

231141491 is an equidigital number, since it uses as much as digits as its factorization.

231141491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492913.

The product of its digits is 864, while the sum is 26.

The square root of 231141491 is about 15203.3381531820. The cubic root of 231141491 is about 613.7044939250.

The spelling of 231141491 in words is "two hundred thirty-one million, one hundred forty-one thousand, four hundred ninety-one".