2231331551 has 2 divisors, whose sum is σ = 2231331552. Its totient is φ = 2231331550.

The previous prime is 2231331511. The next prime is 2231331559. The reversal of 2231331551 is 1551331322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2231331551 - 2¹⁴ = 2231315167 is a prime.

It is a super-3 number, since 3×2231331551³ (a number of 29 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2231331551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231331559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115665775 + 1115665776.

It is an arithmetic number, because the mean of its divisors is an integer number (1115665776).

Almost surely, 2^2231331551 is an apocalyptic number.

2231331551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231331551 is an equidigital number, since it uses as much as digits as its factorization.

2231331551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 26.

The square root of 2231331551 is about 47236.9722886639. The cubic root of 2231331551 is about 1306.7365403322.

Adding to 2231331551 its reverse (1551331322), we get a palindrome (3782662873).

The spelling of 2231331551 in words is "two billion, two hundred thirty-one million, three hundred thirty-one thousand, five hundred fifty-one".