31341223 has 4 divisors (see below), whose sum is σ = 31353520. Its totient is φ = 31328928.

The previous prime is 31341197. The next prime is 31341229. The reversal of 31341223 is 32214313.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 32214313 = 311 ⋅103583.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31341223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31341223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31341229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738 + ... + 7951.

It is an arithmetic number, because the mean of its divisors is an integer number (7838380).

Almost surely, 2^31341223 is an apocalyptic number.

31341223 is a deficient number, since it is larger than the sum of its proper divisors (12297).

31341223 is an equidigital number, since it uses as much as digits as its factorization.

31341223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12296.

The product of its digits is 432, while the sum is 19.

The square root of 31341223 is about 5598.3232311113. The cubic root of 31341223 is about 315.2864548022.

Adding to 31341223 its reverse (32214313), we get a palindrome (63555536).

The spelling of 31341223 in words is "thirty-one million, three hundred forty-one thousand, two hundred twenty-three".