2146142020531 has 4 divisors (see below), whose sum is σ = 2156926654000. Its totient is φ = 2135357387064.

The previous prime is 2146142020523. The next prime is 2146142020609. The reversal of 2146142020531 is 1350202416412.

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 2146142020531 - 2³ = 2146142020523 is a prime.

It is a super-2 number, since 2×2146142020531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2146142020493 and 2146142020502.

It is not an unprimeable number, because it can be changed into a prime (2146142020501) 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, 5392316436 + ... + 5392316833.

It is an arithmetic number, because the mean of its divisors is an integer number (539231663500).

Almost surely, 2^{2146142020531} is an apocalyptic number.

2146142020531 is a deficient number, since it is larger than the sum of its proper divisors (10784633469).

2146142020531 is a wasteful number, since it uses less digits than its factorization.

2146142020531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10784633468.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 2146142020531 its reverse (1350202416412), we get a palindrome (3496344436943).

The spelling of 2146142020531 in words is "two trillion, one hundred forty-six billion, one hundred forty-two million, twenty thousand, five hundred thirty-one".