134187905431 has 2 divisors, whose sum is σ = 134187905432. Its totient is φ = 134187905430.

The previous prime is 134187905387. The next prime is 134187905443. The reversal of 134187905431 is 134509781431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 134187905431 - 2¹¹ = 134187903383 is a prime.

It is a super-2 number, since 2×134187905431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134187905471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67093952715 + 67093952716.

It is an arithmetic number, because the mean of its divisors is an integer number (67093952716).

Almost surely, 2^134187905431 is an apocalyptic number.

134187905431 is a deficient number, since it is larger than the sum of its proper divisors (1).

134187905431 is an equidigital number, since it uses as much as digits as its factorization.

134187905431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The spelling of 134187905431 in words is "one hundred thirty-four billion, one hundred eighty-seven million, nine hundred five thousand, four hundred thirty-one".