31203122323 has 4 divisors (see below), whose sum is σ = 32209674688. Its totient is φ = 30196569960.

The previous prime is 31203122317. The next prime is 31203122341. The reversal of 31203122323 is 32322130213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31203122323 - 2²⁹ = 30666251411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31203122294 and 31203122303.

It is not an unprimeable number, because it can be changed into a prime (31203129323) 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, 503276136 + ... + 503276197.

It is an arithmetic number, because the mean of its divisors is an integer number (8052418672).

Almost surely, 2^31203122323 is an apocalyptic number.

31203122323 is a deficient number, since it is larger than the sum of its proper divisors (1006552365).

31203122323 is a wasteful number, since it uses less digits than its factorization.

31203122323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006552364.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31203122323 its reverse (32322130213), we get a palindrome (63525252536).

The spelling of 31203122323 in words is "thirty-one billion, two hundred three million, one hundred twenty-two thousand, three hundred twenty-three".