31343200123 has 2 divisors, whose sum is σ = 31343200124. Its totient is φ = 31343200122.

The previous prime is 31343200081. The next prime is 31343200139. The reversal of 31343200123 is 32100234313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31343200123 - 2¹³ = 31343191931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31343200094 and 31343200103.

It is not a weakly prime, because it can be changed into another prime (31343200523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15671600061 + 15671600062.

It is an arithmetic number, because the mean of its divisors is an integer number (15671600062).

Almost surely, 2^31343200123 is an apocalyptic number.

31343200123 is a deficient number, since it is larger than the sum of its proper divisors (1).

31343200123 is an equidigital number, since it uses as much as digits as its factorization.

31343200123 is an evil number, because the sum of its binary digits is even.

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

Adding to 31343200123 its reverse (32100234313), we get a palindrome (63443434436).

The spelling of 31343200123 in words is "thirty-one billion, three hundred forty-three million, two hundred thousand, one hundred twenty-three".