1231303342 has 4 divisors (see below), whose sum is σ = 1846955016. Its totient is φ = 615651670.

The previous prime is 1231303309. The next prime is 1231303343. The reversal of 1231303342 is 2433031321.

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

It is a super-2 number, since 2×1231303342² = 3032215840040737928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231303343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307825834 + ... + 307825837.

It is an arithmetic number, because the mean of its divisors is an integer number (461738754).

Almost surely, 2^1231303342 is an apocalyptic number.

1231303342 is a deficient number, since it is larger than the sum of its proper divisors (615651674).

1231303342 is an equidigital number, since it uses as much as digits as its factorization.

1231303342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615651673.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 1231303342 is about 35089.9322028413. The cubic root of 1231303342 is about 1071.8195790287.

Adding to 1231303342 its reverse (2433031321), we get a palindrome (3664334663).

The spelling of 1231303342 in words is "one billion, two hundred thirty-one million, three hundred three thousand, three hundred forty-two".