31212041223 has 8 divisors (see below), whose sum is σ = 45399332736. Its totient is φ = 18916388600.

The previous prime is 31212041213. The next prime is 31212041297. The reversal of 31212041223 is 32214021213.

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 31212041223 - 2⁸ = 31212040967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31212041223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212041213) 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, 472909683 + ... + 472909748.

It is an arithmetic number, because the mean of its divisors is an integer number (5674916592).

Almost surely, 2^31212041223 is an apocalyptic number.

31212041223 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31212041223 is a deficient number, since it is larger than the sum of its proper divisors (14187291513).

31212041223 is a wasteful number, since it uses less digits than its factorization.

31212041223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945819445.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31212041223 its reverse (32214021213), we get a palindrome (63426062436).

The spelling of 31212041223 in words is "thirty-one billion, two hundred twelve million, forty-one thousand, two hundred twenty-three".