2551231342 has 32 divisors (see below), whose sum is σ = 4224960000. Its totient is φ = 1145786400.

The previous prime is 2551231339. The next prime is 2551231343. The reversal of 2551231342 is 2431321552.

It is a self number, because there is not a number n which added to its sum of digits gives 2551231342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551231343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 650367 + ... + 654277.

It is an arithmetic number, because the mean of its divisors is an integer number (132030000).

Almost surely, 2^2551231342 is an apocalyptic number.

2551231342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2551231342 is a deficient number, since it is larger than the sum of its proper divisors (1673728658).

2551231342 is a wasteful number, since it uses less digits than its factorization.

2551231342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4272.

The product of its digits is 7200, while the sum is 28.

The square root of 2551231342 is about 50509.7153228960. The cubic root of 2551231342 is about 1366.4170754067.

Adding to 2551231342 its reverse (2431321552), we get a palindrome (4982552894).

The spelling of 2551231342 in words is "two billion, five hundred fifty-one million, two hundred thirty-one thousand, three hundred forty-two".