2120343531 has 8 divisors (see below), whose sum is σ = 2828294544. Its totient is φ = 1412977440.

The previous prime is 2120343529. The next prime is 2120343539. The reversal of 2120343531 is 1353430212.

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

It is not a de Polignac number, because 2120343531 - 2¹ = 2120343529 is a prime.

It is a super-2 number, since 2×2120343531² = 8991713378907095922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2120343539) 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, 137700 + ... + 152321.

It is an arithmetic number, because the mean of its divisors is an integer number (353536818).

Almost surely, 2^2120343531 is an apocalyptic number.

2120343531 is a deficient number, since it is larger than the sum of its proper divisors (707951013).

2120343531 is a wasteful number, since it uses less digits than its factorization.

2120343531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292461.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 2120343531 is about 46047.1880900452. The cubic root of 2120343531 is about 1284.7010424551.

Adding to 2120343531 its reverse (1353430212), we get a palindrome (3473773743).

The spelling of 2120343531 in words is "two billion, one hundred twenty million, three hundred forty-three thousand, five hundred thirty-one".