2123002031 has 16 divisors (see below), whose sum is σ = 2252355840. Its totient is φ = 1995477120.

The previous prime is 2123002019. The next prime is 2123002073. The reversal of 2123002031 is 1302003212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2123002031 - 2⁶ = 2123001967 is a prime.

It is a super-2 number, since 2×2123002031² = 9014275247260249922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123001997 and 2123002015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123002001) 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, 1735286 + ... + 1736508.

It is an arithmetic number, because the mean of its divisors is an integer number (140772240).

Almost surely, 2^2123002031 is an apocalyptic number.

2123002031 is a deficient number, since it is larger than the sum of its proper divisors (129353809).

2123002031 is a wasteful number, since it uses less digits than its factorization.

2123002031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2123002031 is about 46076.0461736899. The cubic root of 2123002031 is about 1285.2377402838.

Adding to 2123002031 its reverse (1302003212), we get a palindrome (3425005243).

The spelling of 2123002031 in words is "two billion, one hundred twenty-three million, two thousand, thirty-one".