31223103323 has 4 divisors (see below), whose sum is σ = 31371080328. Its totient is φ = 31075126320.

The previous prime is 31223103299. The next prime is 31223103341. The reversal of 31223103323 is 32330132213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32330132213 = 157 ⋅205924409.

It is a cyclic number.

It is not a de Polignac number, because 31223103323 - 2⁶ = 31223103259 is a prime.

It is a super-2 number, since 2×31223103323² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31223103523) 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, 73988186 + ... + 73988607.

It is an arithmetic number, because the mean of its divisors is an integer number (7842770082).

Almost surely, 2^31223103323 is an apocalyptic number.

31223103323 is a deficient number, since it is larger than the sum of its proper divisors (147977005).

31223103323 is a wasteful number, since it uses less digits than its factorization.

31223103323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147977004.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31223103323 its reverse (32330132213), we get a palindrome (63553235536).

The spelling of 31223103323 in words is "thirty-one billion, two hundred twenty-three million, one hundred three thousand, three hundred twenty-three".