31201304400402 has 8 divisors (see below), whose sum is σ = 62402608800816. Its totient is φ = 10400434800132.

The previous prime is 31201304400401. The next prime is 31201304400403. The reversal of 31201304400402 is 20400440310213.

It is an interprime number because it is at equal distance from previous prime (31201304400401) and next prime (31201304400403).

It is a sphenic number, since it is the product of 3 distinct primes.

31201304400402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (31201304400401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2600108700028 + ... + 2600108700039.

It is an arithmetic number, because the mean of its divisors is an integer number (7800326100102).

Almost surely, 2^{31201304400402} is an apocalyptic number.

31201304400402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31201304400402 is a wasteful number, since it uses less digits than its factorization.

31201304400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5200217400072.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31201304400402 its reverse (20400440310213), we get a palindrome (51601744710615).

The spelling of 31201304400402 in words is "thirty-one trillion, two hundred one billion, three hundred four million, four hundred thousand, four hundred two".