1231343242 has 16 divisors (see below), whose sum is σ = 1899080064. Its totient is φ = 598428000.

The previous prime is 1231343221. The next prime is 1231343257. The reversal of 1231343242 is 2423431321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5484 + ... + 49927.

It is an arithmetic number, because the mean of its divisors is an integer number (118692504).

Almost surely, 2^1231343242 is an apocalyptic number.

1231343242 is a deficient number, since it is larger than the sum of its proper divisors (667736822).

1231343242 is a wasteful number, since it uses less digits than its factorization.

1231343242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55725.

The product of its digits is 3456, while the sum is 25.

The square root of 1231343242 is about 35090.5007373791. The cubic root of 1231343242 is about 1071.8311562298.

Adding to 1231343242 its reverse (2423431321), we get a palindrome (3654774563).

It can be divided in two parts, 12313 and 43242, that added together give a palindrome (55555).

The spelling of 1231343242 in words is "one billion, two hundred thirty-one million, three hundred forty-three thousand, two hundred forty-two".