31300213003123 has 4 divisors (see below), whose sum is σ = 31310755347960. Its totient is φ = 31289670658288.

The previous prime is 31300213003121. The next prime is 31300213003153. The reversal of 31300213003123 is 32130031200313.

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 31300213003123 - 2¹ = 31300213003121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31300213003094 and 31300213003103.

It is not an unprimeable number, because it can be changed into a prime (31300213003121) 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, 5271167965 + ... + 5271173902.

It is an arithmetic number, because the mean of its divisors is an integer number (7827688836990).

Almost surely, 2^{31300213003123} is an apocalyptic number.

31300213003123 is a deficient number, since it is larger than the sum of its proper divisors (10542344837).

31300213003123 is a wasteful number, since it uses less digits than its factorization.

31300213003123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10542344836.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31300213003123 its reverse (32130031200313), we get a palindrome (63430244203436).

The spelling of 31300213003123 in words is "thirty-one trillion, three hundred billion, two hundred thirteen million, three thousand, one hundred twenty-three".