31033442401 has 8 divisors (see below), whose sum is σ = 33430539240. Its totient is φ = 28637761152.

The previous prime is 31033442399. The next prime is 31033442449. The reversal of 31033442401 is 10424433013.

It can be written as a sum of positive squares in 4 ways, for example, as 10562700625 + 20470741776 = 102775^2 + 143076^2 .

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

It is not a de Polignac number, because 31033442401 - 2¹ = 31033442399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31033448401) 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 7 ways as a sum of consecutive naturals, for example, 308140 + ... + 396253.

It is an arithmetic number, because the mean of its divisors is an integer number (4178817405).

Almost surely, 2^31033442401 is an apocalyptic number.

It is an amenable number.

31033442401 is a deficient number, since it is larger than the sum of its proper divisors (2397096839).

31033442401 is a wasteful number, since it uses less digits than its factorization.

31033442401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707795.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31033442401 its reverse (10424433013), we get a palindrome (41457875414).

The spelling of 31033442401 in words is "thirty-one billion, thirty-three million, four hundred forty-two thousand, four hundred one".