2131122023 has 16 divisors (see below), whose sum is σ = 2385976320. Its totient is φ = 1891610496.

The previous prime is 2131121981. The next prime is 2131122029. The reversal of 2131122023 is 3202211312.

It is a cyclic number.

It is not a de Polignac number, because 2131122023 - 2⁸ = 2131121767 is a prime.

It is a super-2 number, since 2×2131122023² = 9083362153831225058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131121992 and 2131122010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131122029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57236 + ... + 86822.

It is an arithmetic number, because the mean of its divisors is an integer number (149123520).

Almost surely, 2^2131122023 is an apocalyptic number.

2131122023 is a deficient number, since it is larger than the sum of its proper divisors (254854297).

2131122023 is a wasteful number, since it uses less digits than its factorization.

2131122023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29846.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2131122023 is about 46164.0771921198. The cubic root of 2131122023 is about 1286.8742347333.

Adding to 2131122023 its reverse (3202211312), we get a palindrome (5333333335).

It can be divided in two parts, 21311 and 22023, that added together give a palindrome (43334).

The spelling of 2131122023 in words is "two billion, one hundred thirty-one million, one hundred twenty-two thousand, twenty-three".