2251531342 has 8 divisors (see below), whose sum is σ = 3455838936. Its totient is φ = 1099585032.

The previous prime is 2251531309. The next prime is 2251531349. The reversal of 2251531342 is 2431351522.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2251531342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251531349) 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, 13090213 + ... + 13090384.

It is an arithmetic number, because the mean of its divisors is an integer number (431979867).

Almost surely, 2^2251531342 is an apocalyptic number.

2251531342 is a deficient number, since it is larger than the sum of its proper divisors (1204307594).

2251531342 is a wasteful number, since it uses less digits than its factorization.

2251531342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26180642.

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

The square root of 2251531342 is about 47450.3039189424. The cubic root of 2251531342 is about 1310.6679075670.

Adding to 2251531342 its reverse (2431351522), we get a palindrome (4682882864).

The spelling of 2251531342 in words is "two billion, two hundred fifty-one million, five hundred thirty-one thousand, three hundred forty-two".