2031303020123 has 4 divisors (see below), whose sum is σ = 2187557098608. Its totient is φ = 1875048941640.

The previous prime is 2031303020113. The next prime is 2031303020147. The reversal of 2031303020123 is 3210203031302.

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 2031303020123 - 2¹⁴ = 2031303003739 is a prime.

It is a super-3 number, since 3×2031303020123³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2031303020095 and 2031303020104.

It is not an unprimeable number, because it can be changed into a prime (2031303020113) 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, 78127039223 + ... + 78127039248.

It is an arithmetic number, because the mean of its divisors is an integer number (546889274652).

Almost surely, 2^{2031303020123} is an apocalyptic number.

2031303020123 is a deficient number, since it is larger than the sum of its proper divisors (156254078485).

2031303020123 is a wasteful number, since it uses less digits than its factorization.

2031303020123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156254078484.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 2031303020123 its reverse (3210203031302), we get a palindrome (5241506051425).

The spelling of 2031303020123 in words is "two trillion, thirty-one billion, three hundred three million, twenty thousand, one hundred twenty-three".