31444413430 has 16 divisors (see below), whose sum is σ = 59060811744. Its totient is φ = 12030905920.

The previous prime is 31444413419. The next prime is 31444413437. The reversal of 31444413430 is 3431444413.

It is a happy number.

It is a super-2 number, since 2×31444413430² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31444413392 and 31444413401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31444413437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68357191 + ... + 68357650.

It is an arithmetic number, because the mean of its divisors is an integer number (3691300734).

Almost surely, 2^31444413430 is an apocalyptic number.

31444413430 is a deficient number, since it is larger than the sum of its proper divisors (27616398314).

31444413430 is a wasteful number, since it uses less digits than its factorization.

31444413430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136714871.

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

Adding to 31444413430 its reverse (3431444413), we get a palindrome (34875857843).

The spelling of 31444413430 in words is "thirty-one billion, four hundred forty-four million, four hundred thirteen thousand, four hundred thirty".