31444134430 has 16 divisors (see below), whose sum is σ = 56634046560. Its totient is φ = 12569963872.

The previous prime is 31444134383. The next prime is 31444134433. The reversal of 31444134430 is 3443144413.

It is a happy number.

It is a super-2 number, since 2×31444134430² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31444134392 and 31444134401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31444134433) 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 7 ways as a sum of consecutive naturals, for example, 944050 + ... + 976789.

It is an arithmetic number, because the mean of its divisors is an integer number (3539627910).

Almost surely, 2^31444134430 is an apocalyptic number.

31444134430 is a deficient number, since it is larger than the sum of its proper divisors (25189912130).

31444134430 is a wasteful number, since it uses less digits than its factorization.

31444134430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922483.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 31444134430 its reverse (3443144413), we get a palindrome (34887278843).

The spelling of 31444134430 in words is "thirty-one billion, four hundred forty-four million, one hundred thirty-four thousand, four hundred thirty".