31799404001 has 4 divisors (see below), whose sum is σ = 31799768004. Its totient is φ = 31799040000.

The previous prime is 31799403983. The next prime is 31799404003. The reversal of 31799404001 is 10040499713.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 18272550976 + 13526853025 = 135176^2 + 116305^2 .

It is a cyclic number.

It is not a de Polignac number, because 31799404001 - 2¹⁰ = 31799402977 is a prime.

It is a super-2 number, since 2×31799404001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31799404003) 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, 36401 + ... + 254801.

It is an arithmetic number, because the mean of its divisors is an integer number (7949942001).

It is a Poulet number, since it divides 2^31799404000-1.

Almost surely, 2^31799404001 is an apocalyptic number.

31799404001 is the 145601-st pentagonal number.

It is an amenable number.

31799404001 is a deficient number, since it is larger than the sum of its proper divisors (364003).

31799404001 is a wasteful number, since it uses less digits than its factorization.

31799404001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364002.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 31799404001 in words is "thirty-one billion, seven hundred ninety-nine million, four hundred four thousand, one".