51435111131 has 2 divisors, whose sum is σ = 51435111132. Its totient is φ = 51435111130.

The previous prime is 51435111019. The next prime is 51435111137. The reversal of 51435111131 is 13111153415.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51435111131 is a prime.

It is a super-2 number, since 2×51435111131² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51435111131.

It is not a weakly prime, because it can be changed into another prime (51435111137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25717555565 + 25717555566.

It is an arithmetic number, because the mean of its divisors is an integer number (25717555566).

Almost surely, 2^51435111131 is an apocalyptic number.

51435111131 is a deficient number, since it is larger than the sum of its proper divisors (1).

51435111131 is an equidigital number, since it uses as much as digits as its factorization.

51435111131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 900, while the sum is 26.

Adding to 51435111131 its reverse (13111153415), we get a palindrome (64546264546).

The spelling of 51435111131 in words is "fifty-one billion, four hundred thirty-five million, one hundred eleven thousand, one hundred thirty-one".