31444413423 has 4 divisors (see below), whose sum is σ = 41925884568. Its totient is φ = 20962942280.

The previous prime is 31444413419. The next prime is 31444413437. The reversal of 31444413423 is 32431444413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31444413423 - 2² = 31444413419 is a prime.

It is a super-3 number, since 3×31444413423³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31444413493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5240735568 + ... + 5240735573.

It is an arithmetic number, because the mean of its divisors is an integer number (10481471142).

Almost surely, 2^31444413423 is an apocalyptic number.

31444413423 is a deficient number, since it is larger than the sum of its proper divisors (10481471145).

31444413423 is a wasteful number, since it uses less digits than its factorization.

31444413423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10481471144.

The product of its digits is 55296, while the sum is 33.

Adding to 31444413423 its reverse (32431444413), we get a palindrome (63875857836).

The spelling of 31444413423 in words is "thirty-one billion, four hundred forty-four million, four hundred thirteen thousand, four hundred twenty-three".