31103030013023 has 4 divisors (see below), whose sum is σ = 31104664367088. Its totient is φ = 31101395658960.

The previous prime is 31103030013001. The next prime is 31103030013061. The reversal of 31103030013023 is 32031003030113.

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 31103030013023 - 2¹⁴ = 31103029996639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31103030012986 and 31103030013004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103030015023) 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, 817148486 + ... + 817186547.

It is an arithmetic number, because the mean of its divisors is an integer number (7776166091772).

Almost surely, 2^{31103030013023} is an apocalyptic number.

31103030013023 is a deficient number, since it is larger than the sum of its proper divisors (1634354065).

31103030013023 is a wasteful number, since it uses less digits than its factorization.

31103030013023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634354064.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 31103030013023 its reverse (32031003030113), we get a palindrome (63134033043136).

The spelling of 31103030013023 in words is "thirty-one trillion, one hundred three billion, thirty million, thirteen thousand, twenty-three".