2131233120 has 120 divisors (see below), whose sum is σ = 7521522624. Its totient is φ = 568325376.

The previous prime is 2131233119. The next prime is 2131233121. The reversal of 2131233120 is 213321312.

2131233120 is a `hidden beast` number, since 2 + 1 + 312 + 331 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (2131233119) and next prime (2131233121).

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×2131233120² = 9084309223569868800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2131233093 and 2131233102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131233121) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 69264 + ... + 95183.

Almost surely, 2^2131233120 is an apocalyptic number.

2131233120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131233120 is an abundant number, since it is smaller than the sum of its proper divisors (5390289504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131233120 is a wasteful number, since it uses less digits than its factorization.

2131233120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164474 (or 164457 counting only the distinct ones).

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

The square root of 2131233120 is about 46165.2804605366. The cubic root of 2131233120 is about 1286.8965962532.

Adding to 2131233120 its reverse (213321312), we get a palindrome (2344554432).

The spelling of 2131233120 in words is "two billion, one hundred thirty-one million, two hundred thirty-three thousand, one hundred twenty".