1231340322 has 16 divisors (see below), whose sum is σ = 2463117120. Its totient is φ = 410374032.

The previous prime is 1231340309. The next prime is 1231340323. The reversal of 1231340322 is 2230431321.

It is not an unprimeable number, because it can be changed into a prime (1231340323) 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, 27204 + ... + 56592.

It is an arithmetic number, because the mean of its divisors is an integer number (153944820).

Almost surely, 2^1231340322 is an apocalyptic number.

1231340322 is an abundant number, since it is smaller than the sum of its proper divisors (1231776798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231340322 is a wasteful number, since it uses less digits than its factorization.

1231340322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36377.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1231340322 is about 35090.4591306526. The cubic root of 1231340322 is about 1071.8303089845.

Adding to 1231340322 its reverse (2230431321), we get a palindrome (3461771643).

Subtracting 1231340322 from its reverse (2230431321), we obtain a palindrome (999090999).

The spelling of 1231340322 in words is "one billion, two hundred thirty-one million, three hundred forty thousand, three hundred twenty-two".