31802639130401 has 4 divisors (see below), whose sum is σ = 31802727790272. Its totient is φ = 31802550470532.

The previous prime is 31802639130343. The next prime is 31802639130487. The reversal of 31802639130401 is 10403193620813.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31802639130401 is a prime.

It is a super-2 number, since 2×31802639130401² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31802639132401) 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, 43789685 + ... + 44510018.

It is an arithmetic number, because the mean of its divisors is an integer number (7950681947568).

Almost surely, 2^{31802639130401} is an apocalyptic number.

It is an amenable number.

31802639130401 is a deficient number, since it is larger than the sum of its proper divisors (88659871).

31802639130401 is an equidigital number, since it uses as much as digits as its factorization.

31802639130401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88659870.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 31802639130401 in words is "thirty-one trillion, eight hundred two billion, six hundred thirty-nine million, one hundred thirty thousand, four hundred one".