2120322531 has 24 divisors (see below), whose sum is σ = 2944745472. Its totient is φ = 1356944400.

The previous prime is 2120322473. The next prime is 2120322539. The reversal of 2120322531 is 1352230212.

It is not a de Polignac number, because 2120322531 - 2¹⁰ = 2120321507 is a prime.

It is a super-2 number, since 2×2120322531² = 8991535270932491922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2120322498 and 2120322507.

It is not an unprimeable number, because it can be changed into a prime (2120322539) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 363246 + ... + 369036.

It is an arithmetic number, because the mean of its divisors is an integer number (122697728).

Almost surely, 2^2120322531 is an apocalyptic number.

2120322531 is a deficient number, since it is larger than the sum of its proper divisors (824422941).

2120322531 is a wasteful number, since it uses less digits than its factorization.

2120322531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5983 (or 5952 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2120322531 is about 46046.9600625275. The cubic root of 2120322531 is about 1284.6968011910.

Adding to 2120322531 its reverse (1352230212), we get a palindrome (3472552743).

It can be divided in two parts, 21203 and 22531, that added together give a palindrome (43734).

The spelling of 2120322531 in words is "two billion, one hundred twenty million, three hundred twenty-two thousand, five hundred thirty-one".