231214153 has 4 divisors (see below), whose sum is σ = 231297940. Its totient is φ = 231130368.

The previous prime is 231214133. The next prime is 231214163. The reversal of 231214153 is 351412132.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 159845449 + 71368704 = 12643^2 + 8448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231214153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231214133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37608 + ... + 43321.

It is an arithmetic number, because the mean of its divisors is an integer number (57824485).

Almost surely, 2^231214153 is an apocalyptic number.

It is an amenable number.

231214153 is a deficient number, since it is larger than the sum of its proper divisors (83787).

231214153 is an equidigital number, since it uses as much as digits as its factorization.

231214153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83786.

The product of its digits is 720, while the sum is 22.

The square root of 231214153 is about 15205.7276379659. The cubic root of 231214153 is about 613.7687955552.

Adding to 231214153 its reverse (351412132), we get a palindrome (582626285).

The spelling of 231214153 in words is "two hundred thirty-one million, two hundred fourteen thousand, one hundred fifty-three".