31303012113123 has 4 divisors (see below), whose sum is σ = 41737349484168. Its totient is φ = 20868674742080.

The previous prime is 31303012113071. The next prime is 31303012113169. The reversal of 31303012113123 is 32131121030313.

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 31303012113123 - 2¹² = 31303012109027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31303012113093 and 31303012113102.

It is not an unprimeable number, because it can be changed into a prime (31303012153123) 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, 5217168685518 + ... + 5217168685523.

It is an arithmetic number, because the mean of its divisors is an integer number (10434337371042).

Almost surely, 2^{31303012113123} is an apocalyptic number.

31303012113123 is a deficient number, since it is larger than the sum of its proper divisors (10434337371045).

31303012113123 is a wasteful number, since it uses less digits than its factorization.

31303012113123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10434337371044.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 31303012113123 its reverse (32131121030313), we get a palindrome (63434133143436).

The spelling of 31303012113123 in words is "thirty-one trillion, three hundred three billion, twelve million, one hundred thirteen thousand, one hundred twenty-three".