2031213123 has 12 divisors (see below), whose sum is σ = 2938980408. Its totient is φ = 1351831680.

The previous prime is 2031213097. The next prime is 2031213131. The reversal of 2031213123 is 3213121302.

It is not a de Polignac number, because 2031213123 - 2¹² = 2031209027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2031213096 and 2031213105.

It is not an unprimeable number, because it can be changed into a prime (2031213143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186958 + ... + 197523.

It is an arithmetic number, because the mean of its divisors is an integer number (244915034).

Almost surely, 2^2031213123 is an apocalyptic number.

2031213123 is a deficient number, since it is larger than the sum of its proper divisors (907767285).

2031213123 is a wasteful number, since it uses less digits than its factorization.

2031213123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385074 (or 385071 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2031213123 is about 45068.9818278603. The cubic root of 2031213123 is about 1266.4415906715.

Adding to 2031213123 its reverse (3213121302), we get a palindrome (5244334425).

The spelling of 2031213123 in words is "two billion, thirty-one million, two hundred thirteen thousand, one hundred twenty-three".