2123012031 has 8 divisors (see below), whose sum is σ = 3235065984. Its totient is φ = 1213149720.

The previous prime is 2123012009. The next prime is 2123012053. The reversal of 2123012031 is 1302103212.

It is an interprime number because it is at equal distance from previous prime (2123012009) and next prime (2123012053).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2123012031 - 2⁵ = 2123011999 is a prime.

It is a super-2 number, since 2×2123012031² = 9014360167541489922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2123012031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123014031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50547885 + ... + 50547926.

It is an arithmetic number, because the mean of its divisors is an integer number (404383248).

Almost surely, 2^2123012031 is an apocalyptic number.

2123012031 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2123012031 is a deficient number, since it is larger than the sum of its proper divisors (1112053953).

2123012031 is a wasteful number, since it uses less digits than its factorization.

2123012031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101095821.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2123012031 is about 46076.1546898176. The cubic root of 2123012031 is about 1285.2397582371.

Adding to 2123012031 its reverse (1302103212), we get a palindrome (3425115243).

The spelling of 2123012031 in words is "two billion, one hundred twenty-three million, twelve thousand, thirty-one".