323720642 has 16 divisors (see below), whose sum is σ = 555714432. Its totient is φ = 138546240.

The previous prime is 323720633. The next prime is 323720671. The reversal of 323720642 is 246027323.

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, 5159 + ... + 25962.

It is an arithmetic number, because the mean of its divisors is an integer number (34732152).

Almost surely, 2^323720642 is an apocalyptic number.

323720642 is a deficient number, since it is larger than the sum of its proper divisors (231993790).

323720642 is a wasteful number, since it uses less digits than its factorization.

323720642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31873.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 323720642 is about 17992.2383821469. The cubic root of 323720642 is about 686.6310905731.

Adding to 323720642 its reverse (246027323), we get a palindrome (569747965).

The spelling of 323720642 in words is "three hundred twenty-three million, seven hundred twenty thousand, six hundred forty-two".