31320053402 has 32 divisors (see below), whose sum is σ = 51630476544. Its totient is φ = 14131166400.

The previous prime is 31320053399. The next prime is 31320053407. The reversal of 31320053402 is 20435002313.

It is not an unprimeable number, because it can be changed into a prime (31320053407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3805652 + ... + 3813872.

It is an arithmetic number, because the mean of its divisors is an integer number (1613452392).

Almost surely, 2^31320053402 is an apocalyptic number.

31320053402 is a deficient number, since it is larger than the sum of its proper divisors (20310423142).

31320053402 is a wasteful number, since it uses less digits than its factorization.

31320053402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9494.

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 31320053402 its reverse (20435002313), we get a palindrome (51755055715).

The spelling of 31320053402 in words is "thirty-one billion, three hundred twenty million, fifty-three thousand, four hundred two".