223212123031 has 2 divisors, whose sum is σ = 223212123032. Its totient is φ = 223212123030.

The previous prime is 223212122993. The next prime is 223212123041. The reversal of 223212123031 is 130321212322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223212123031 - 2²¹ = 223210025879 is a prime.

It is a super-3 number, since 3×223212123031³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 223212122993 and 223212123011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223212123041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111606061515 + 111606061516.

It is an arithmetic number, because the mean of its divisors is an integer number (111606061516).

Almost surely, 2^223212123031 is an apocalyptic number.

223212123031 is a deficient number, since it is larger than the sum of its proper divisors (1).

223212123031 is an equidigital number, since it uses as much as digits as its factorization.

223212123031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 223212123031 its reverse (130321212322), we get a palindrome (353533335353).

The spelling of 223212123031 in words is "two hundred twenty-three billion, two hundred twelve million, one hundred twenty-three thousand, thirty-one".