1021312342 has 16 divisors (see below), whose sum is σ = 1548201600. Its totient is φ = 505258560.

The previous prime is 1021312333. The next prime is 1021312367. The reversal of 1021312342 is 2432131201.

It is a happy number.

It is a congruent number.

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, 173467 + ... + 179257.

It is an arithmetic number, because the mean of its divisors is an integer number (96762600).

Almost surely, 2^1021312342 is an apocalyptic number.

1021312342 is a deficient number, since it is larger than the sum of its proper divisors (526889258).

1021312342 is a wasteful number, since it uses less digits than its factorization.

1021312342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1021312342 is about 31957.9777520418. The cubic root of 1021312342 is about 1007.0542347605.

Adding to 1021312342 its reverse (2432131201), we get a palindrome (3453443543).

It can be divided in two parts, 102131234 and 2, that added together give a square (102131236 = 10106²).

The spelling of 1021312342 in words is "one billion, twenty-one million, three hundred twelve thousand, three hundred forty-two".