1231213022 has 8 divisors (see below), whose sum is σ = 1988882616. Its totient is φ = 568252152.

The previous prime is 1231213007. The next prime is 1231213033. The reversal of 1231213022 is 2203121321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23677148 + ... + 23677199.

It is an arithmetic number, because the mean of its divisors is an integer number (248610327).

Almost surely, 2^1231213022 is an apocalyptic number.

1231213022 is a deficient number, since it is larger than the sum of its proper divisors (757669594).

1231213022 is a wasteful number, since it uses less digits than its factorization.

1231213022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47354362.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1231213022 is about 35088.6452004064. The cubic root of 1231213022 is about 1071.7933712676.

Adding to 1231213022 its reverse (2203121321), we get a palindrome (3434334343).

The spelling of 1231213022 in words is "one billion, two hundred thirty-one million, two hundred thirteen thousand, twenty-two".