1551131143 has 2 divisors, whose sum is σ = 1551131144. Its totient is φ = 1551131142.

The previous prime is 1551131111. The next prime is 1551131161. The reversal of 1551131143 is 3411311551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1551131143 - 2⁵ = 1551131111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1551135143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775565571 + 775565572.

It is an arithmetic number, because the mean of its divisors is an integer number (775565572).

Almost surely, 2^1551131143 is an apocalyptic number.

1551131143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551131143 is an equidigital number, since it uses as much as digits as its factorization.

1551131143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 900, while the sum is 25.

The square root of 1551131143 is about 39384.4022805983. The cubic root of 1551131143 is about 1157.5759782938.

Adding to 1551131143 its reverse (3411311551), we get a palindrome (4962442694).

The spelling of 1551131143 in words is "one billion, five hundred fifty-one million, one hundred thirty-one thousand, one hundred forty-three".