2142133531 has 4 divisors (see below), whose sum is σ = 2149757064. Its totient is φ = 2134510000.

The previous prime is 2142133529. The next prime is 2142133541. The reversal of 2142133531 is 1353312412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2142133531 - 2¹ = 2142133529 is a prime.

It is a super-2 number, since 2×2142133531² = 9177472129269055922, 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 = 2142133496 and 2142133505.

It is not an unprimeable number, because it can be changed into a prime (2142133541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3811345 + ... + 3811906.

It is an arithmetic number, because the mean of its divisors is an integer number (537439266).

Almost surely, 2^2142133531 is an apocalyptic number.

2142133531 is a deficient number, since it is larger than the sum of its proper divisors (7623533).

2142133531 is an equidigital number, since it uses as much as digits as its factorization.

2142133531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7623532.

The product of its digits is 2160, while the sum is 25.

The square root of 2142133531 is about 46283.1884273329. The cubic root of 2142133531 is about 1289.0868547208.

Adding to 2142133531 its reverse (1353312412), we get a palindrome (3495445943).

The spelling of 2142133531 in words is "two billion, one hundred forty-two million, one hundred thirty-three thousand, five hundred thirty-one".