31321323342 has 24 divisors (see below), whose sum is σ = 68017469520. Its totient is φ = 10416656160.

The previous prime is 31321323307. The next prime is 31321323347. The reversal of 31321323342 is 24332312313.

31321323342 is a `hidden beast` number, since 3 + 1 + 321 + 3 + 2 + 334 + 2 = 666.

It is a super-2 number, since 2×31321323342² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31321323347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1973959 + ... + 1989762.

It is an arithmetic number, because the mean of its divisors is an integer number (2834061230).

Almost surely, 2^31321323342 is an apocalyptic number.

31321323342 is an abundant number, since it is smaller than the sum of its proper divisors (36696146178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31321323342 is a wasteful number, since it uses less digits than its factorization.

31321323342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964168 (or 3964165 counting only the distinct ones).

The product of its digits is 7776, while the sum is 27.

Adding to 31321323342 its reverse (24332312313), we get a palindrome (55653635655).

The spelling of 31321323342 in words is "thirty-one billion, three hundred twenty-one million, three hundred twenty-three thousand, three hundred forty-two".