31301020123 has 2 divisors, whose sum is σ = 31301020124. Its totient is φ = 31301020122.

The previous prime is 31301020117. The next prime is 31301020133. The reversal of 31301020123 is 32102010313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31301020123 - 2¹⁷ = 31300889051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31301020097 and 31301020106.

It is not a weakly prime, because it can be changed into another prime (31301020103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650510061 + 15650510062.

It is an arithmetic number, because the mean of its divisors is an integer number (15650510062).

Almost surely, 2^31301020123 is an apocalyptic number.

31301020123 is a deficient number, since it is larger than the sum of its proper divisors (1).

31301020123 is an equidigital number, since it uses as much as digits as its factorization.

31301020123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31301020123 its reverse (32102010313), we get a palindrome (63403030436).

The spelling of 31301020123 in words is "thirty-one billion, three hundred one million, twenty thousand, one hundred twenty-three".