31000242401 has 4 divisors (see below), whose sum is σ = 31047284400. Its totient is φ = 30953200404.

The previous prime is 31000242397. The next prime is 31000242409. The reversal of 31000242401 is 10424200013.

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 not a de Polignac number, because 31000242401 - 2² = 31000242397 is a prime.

It is a super-2 number, since 2×31000242401² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31000242401.

It is not an unprimeable number, because it can be changed into a prime (31000242409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23520011 + ... + 23521328.

It is an arithmetic number, because the mean of its divisors is an integer number (7761821100).

Almost surely, 2^31000242401 is an apocalyptic number.

It is an amenable number.

31000242401 is a deficient number, since it is larger than the sum of its proper divisors (47041999).

31000242401 is an equidigital number, since it uses as much as digits as its factorization.

31000242401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47041998.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 31000242401 its reverse (10424200013), we get a palindrome (41424442414).

The spelling of 31000242401 in words is "thirty-one billion, two hundred forty-two thousand, four hundred one".