31405143223 has 8 divisors (see below), whose sum is σ = 32222133216. Its totient is φ = 30590582400.

The previous prime is 31405143221. The next prime is 31405143251. The reversal of 31405143223 is 32234150413.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31405143223 - 2¹ = 31405143221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31405143191 and 31405143200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31405143221) 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, 581086 + ... + 632827.

It is an arithmetic number, because the mean of its divisors is an integer number (4027766652).

Almost surely, 2^31405143223 is an apocalyptic number.

31405143223 is a deficient number, since it is larger than the sum of its proper divisors (816989993).

31405143223 is a wasteful number, since it uses less digits than its factorization.

31405143223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214585.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 31405143223 its reverse (32234150413), we get a palindrome (63639293636).

The spelling of 31405143223 in words is "thirty-one billion, four hundred five million, one hundred forty-three thousand, two hundred twenty-three".