31433244401 has 12 divisors (see below), whose sum is σ = 34349469660. Its totient is φ = 28749090240.

The previous prime is 31433244383. The next prime is 31433244407. The reversal of 31433244401 is 10444233413.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 7569174001 + 23864070400 = 87001^2 + 154480^2 .

It is not a de Polignac number, because 31433244401 - 2¹⁰ = 31433243377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31433244407) 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 11 ways as a sum of consecutive naturals, for example, 834770 + ... + 871611.

It is an arithmetic number, because the mean of its divisors is an integer number (2862455805).

Almost surely, 2^31433244401 is an apocalyptic number.

It is an amenable number.

31433244401 is a deficient number, since it is larger than the sum of its proper divisors (2916225259).

31433244401 is a wasteful number, since it uses less digits than its factorization.

31433244401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706516 (or 1706503 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 31433244401 its reverse (10444233413), we get a palindrome (41877477814).

The spelling of 31433244401 in words is "thirty-one billion, four hundred thirty-three million, two hundred forty-four thousand, four hundred one".