31242220003444 has 12 divisors (see below), whose sum is σ = 54674243942724. Its totient is φ = 15621007448384.

The previous prime is 31242220003439. The next prime is 31242220003447. The reversal of 31242220003444 is 44430002224213.

It can be written as a sum of positive squares in 2 ways, for example, as 7549371702544 + 23692848300900 = 2747612^2 + 4867530^2 .

It is a super-2 number, since 2×31242220003444² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31242220003447) 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, 24950839 + ... + 26173054.

It is an arithmetic number, because the mean of its divisors is an integer number (4556186995227).

Almost surely, 2^{31242220003444} is an apocalyptic number.

It is an amenable number.

31242220003444 is a deficient number, since it is larger than the sum of its proper divisors (23432023939280).

31242220003444 is a wasteful number, since it uses less digits than its factorization.

31242220003444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51276674 (or 51276672 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 31242220003444 its reverse (44430002224213), we get a palindrome (75672222227657).

The spelling of 31242220003444 in words is "thirty-one trillion, two hundred forty-two billion, two hundred twenty million, three thousand, four hundred forty-four".