134979431 has 2 divisors, whose sum is σ = 134979432. Its totient is φ = 134979430.

The previous prime is 134979419. The next prime is 134979437.

It is a happy number.

134979431 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 134979431 - 2¹⁸ = 134717287 is a prime.

It is a super-2 number, since 2×134979431² = 36438893586167522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134979437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67489715 + 67489716.

It is an arithmetic number, because the mean of its divisors is an integer number (67489716).

Almost surely, 2^134979431 is an apocalyptic number.

134979431 is a deficient number, since it is larger than the sum of its proper divisors (1).

134979431 is an equidigital number, since it uses as much as digits as its factorization.

134979431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 41.

The square root of 134979431 is about 11618.0648560765. The cubic root of 134979431 is about 512.9667289795.

The spelling of 134979431 in words is "one hundred thirty-four million, nine hundred seventy-nine thousand, four hundred thirty-one".