31042322121401 has 4 divisors (see below), whose sum is σ = 31044822925092. Its totient is φ = 31039821317712.

The previous prime is 31042322121359. The next prime is 31042322121427. The reversal of 31042322121401 is 10412122324013.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9783758410000 + 21258563711401 = 3127900^2 + 4610701^2 .

It is a cyclic number.

It is not a de Polignac number, because 31042322121401 - 2⁶ = 31042322121337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31042322121451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250383226 + ... + 1250408051.

It is an arithmetic number, because the mean of its divisors is an integer number (7761205731273).

Almost surely, 2^{31042322121401} is an apocalyptic number.

It is an amenable number.

31042322121401 is a deficient number, since it is larger than the sum of its proper divisors (2500803691).

31042322121401 is a wasteful number, since it uses less digits than its factorization.

31042322121401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500803690.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 31042322121401 its reverse (10412122324013), we get a palindrome (41454444445414).

The spelling of 31042322121401 in words is "thirty-one trillion, forty-two billion, three hundred twenty-two million, one hundred twenty-one thousand, four hundred one".