31320302401 has 4 divisors (see below), whose sum is σ = 31450262404. Its totient is φ = 31190342400.

The previous prime is 31320302399. The next prime is 31320302413. The reversal of 31320302401 is 10420302313.

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 27947480625 + 3372821776 = 167175^2 + 58076^2 .

It is a cyclic number.

It is not a de Polignac number, because 31320302401 - 2¹ = 31320302399 is a prime.

It is a super-2 number, since 2×31320302401² (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 (31320302201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64979640 + ... + 64980121.

It is an arithmetic number, because the mean of its divisors is an integer number (7862565601).

Almost surely, 2^31320302401 is an apocalyptic number.

It is an amenable number.

31320302401 is a deficient number, since it is larger than the sum of its proper divisors (129960003).

31320302401 is a wasteful number, since it uses less digits than its factorization.

31320302401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129960002.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31320302401 its reverse (10420302313), we get a palindrome (41740604714).

The spelling of 31320302401 in words is "thirty-one billion, three hundred twenty million, three hundred two thousand, four hundred one".