231154226 has 4 divisors (see below), whose sum is σ = 346731342. Its totient is φ = 115577112.

The previous prime is 231154223. The next prime is 231154241. The reversal of 231154226 is 622451132.

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 only one way, i.e., 136072225 + 95082001 = 11665^2 + 9751^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231154195 and 231154204.

It is not an unprimeable number, because it can be changed into a prime (231154223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57788555 + ... + 57788558.

Almost surely, 2^231154226 is an apocalyptic number.

231154226 is a deficient number, since it is larger than the sum of its proper divisors (115577116).

231154226 is a wasteful number, since it uses less digits than its factorization.

231154226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115577115.

The product of its digits is 2880, while the sum is 26.

The square root of 231154226 is about 15203.7569699071. The cubic root of 231154226 is about 613.7157646308.

The spelling of 231154226 in words is "two hundred thirty-one million, one hundred fifty-four thousand, two hundred twenty-six".