1231442312 has 64 divisors (see below), whose sum is σ = 2441880000. Its totient is φ = 581366016.

The previous prime is 1231442293. The next prime is 1231442321. The reversal of 1231442312 is 2132441321.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3528314 + ... + 3528662.

It is an arithmetic number, because the mean of its divisors is an integer number (38154375).

Almost surely, 2^1231442312 is an apocalyptic number.

It is an amenable number.

1231442312 is a deficient number, since it is larger than the sum of its proper divisors (1210437688).

1231442312 is a wasteful number, since it uses less digits than its factorization.

1231442312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678 (or 674 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 1231442312 is about 35091.9123445845. The cubic root of 1231442312 is about 1071.8599008455.

Adding to 1231442312 its reverse (2132441321), we get a palindrome (3363883633).

Subtracting 1231442312 from its reverse (2132441321), we obtain a palindrome (900999009).

The spelling of 1231442312 in words is "one billion, two hundred thirty-one million, four hundred forty-two thousand, three hundred twelve".