2123103031 has 16 divisors (see below), whose sum is σ = 2505805120. Its totient is φ = 1760797440.

The previous prime is 2123103011. The next prime is 2123103061. The reversal of 2123103031 is 1303013212.

It is not a de Polignac number, because 2123103031 - 2⁷ = 2123102903 is a prime.

It is a super-2 number, since 2×2123103031² = 9015132960482773922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2123102996 and 2123103014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123103001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24235 + ... + 69523.

It is an arithmetic number, because the mean of its divisors is an integer number (156612820).

Almost surely, 2^2123103031 is an apocalyptic number.

2123103031 is a deficient number, since it is larger than the sum of its proper divisors (382702089).

2123103031 is a wasteful number, since it uses less digits than its factorization.

2123103031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45514.

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

The square root of 2123103031 is about 46077.1421748355. The cubic root of 2123103031 is about 1285.2581213215.

Adding to 2123103031 its reverse (1303013212), we get a palindrome (3426116243).

The spelling of 2123103031 in words is "two billion, one hundred twenty-three million, one hundred three thousand, thirty-one".