135473431 has 8 divisors (see below), whose sum is σ = 136805760. Its totient is φ = 134146488.

The previous prime is 135473407. The next prime is 135473453. The reversal of 135473431 is 134374531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135473431 - 2⁵ = 135473399 is a prime.

It is a super-2 number, since 2×135473431² = 36706101013823522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135473393 and 135473402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135473461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63870 + ... + 65956.

It is an arithmetic number, because the mean of its divisors is an integer number (17100720).

Almost surely, 2^135473431 is an apocalyptic number.

135473431 is a deficient number, since it is larger than the sum of its proper divisors (1332329).

135473431 is a wasteful number, since it uses less digits than its factorization.

135473431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2693.

The product of its digits is 15120, while the sum is 31.

The square root of 135473431 is about 11639.3054346039. The cubic root of 135473431 is about 513.5917552025.

The spelling of 135473431 in words is "one hundred thirty-five million, four hundred seventy-three thousand, four hundred thirty-one".