231013022 has 4 divisors (see below), whose sum is σ = 346519536. Its totient is φ = 115506510.

The previous prime is 231013009. The next prime is 231013031. The reversal of 231013022 is 220310132.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 231012988 and 231013006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57753254 + ... + 57753257.

It is an arithmetic number, because the mean of its divisors is an integer number (86629884).

Almost surely, 2^231013022 is an apocalyptic number.

231013022 is a deficient number, since it is larger than the sum of its proper divisors (115506514).

231013022 is a wasteful number, since it uses less digits than its factorization.

231013022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115506513.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 231013022 is about 15199.1125398821. The cubic root of 231013022 is about 613.5907733728.

Adding to 231013022 its reverse (220310132), we get a palindrome (451323154).

The spelling of 231013022 in words is "two hundred thirty-one million, thirteen thousand, twenty-two".