42131123351 has 2 divisors, whose sum is σ = 42131123352. Its totient is φ = 42131123350.

The previous prime is 42131123311. The next prime is 42131123369. The reversal of 42131123351 is 15332113124.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42131123351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42131123351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42131123311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21065561675 + 21065561676.

It is an arithmetic number, because the mean of its divisors is an integer number (21065561676).

Almost surely, 2^42131123351 is an apocalyptic number.

42131123351 is a deficient number, since it is larger than the sum of its proper divisors (1).

42131123351 is an equidigital number, since it uses as much as digits as its factorization.

42131123351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

Adding to 42131123351 its reverse (15332113124), we get a palindrome (57463236475).

The spelling of 42131123351 in words is "forty-two billion, one hundred thirty-one million, one hundred twenty-three thousand, three hundred fifty-one".