2531221352 has 32 divisors (see below), whose sum is σ = 5262386400. Its totient is φ = 1131691200.

The previous prime is 2531221351. The next prime is 2531221361.

It is a happy number.

2531221352 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (2531221351) 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, 230402 + ... + 241137.

It is an arithmetic number, because the mean of its divisors is an integer number (164449575).

Almost surely, 2^2531221352 is an apocalyptic number.

2531221352 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2531221352 is an abundant number, since it is smaller than the sum of its proper divisors (2731165048).

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

2531221352 is a wasteful number, since it uses less digits than its factorization.

2531221352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471617 (or 471613 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 2531221352 is about 50311.2447868267. The cubic root of 2531221352 is about 1362.8353031854.

It can be divided in two parts, 25312 and 21352, that added together give a palindrome (46664).

The spelling of 2531221352 in words is "two billion, five hundred thirty-one million, two hundred twenty-one thousand, three hundred fifty-two".