31421312201 has 8 divisors (see below), whose sum is σ = 31736428104. Its totient is φ = 31106275200.

The previous prime is 31421312173. The next prime is 31421312231. The reversal of 31421312201 is 10221312413.

It can be written as a sum of positive squares in 4 ways, for example, as 23994319801 + 7426992400 = 154901^2 + 86180^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31421312201 - 2³⁰ = 30347570377 is a prime.

It is a super-2 number, since 2×31421312201² (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 (31421312231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1092461 + ... + 1120853.

It is an arithmetic number, because the mean of its divisors is an integer number (3967053513).

Almost surely, 2^31421312201 is an apocalyptic number.

It is an amenable number.

31421312201 is a deficient number, since it is larger than the sum of its proper divisors (315115903).

31421312201 is a wasteful number, since it uses less digits than its factorization.

31421312201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39451.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31421312201 its reverse (10221312413), we get a palindrome (41642624614).

The spelling of 31421312201 in words is "thirty-one billion, four hundred twenty-one million, three hundred twelve thousand, two hundred one".