135777131 has 8 divisors (see below), whose sum is σ = 155545824. Its totient is φ = 116101440.

The previous prime is 135777121. The next prime is 135777133. The reversal of 135777131 is 131777531.

It is a happy number.

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

It is not a de Polignac number, because 135777131 - 2⁶ = 135777067 is a prime.

It is a super-2 number, since 2×135777131² = 36870858605182322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135777091 and 135777100.

It is not an unprimeable number, because it can be changed into a prime (135777133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20090 + ... + 25983.

It is an arithmetic number, because the mean of its divisors is an integer number (19443228).

Almost surely, 2^135777131 is an apocalyptic number.

135777131 is a deficient number, since it is larger than the sum of its proper divisors (19768693).

135777131 is an equidigital number, since it uses as much as digits as its factorization.

135777131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46501.

The product of its digits is 15435, while the sum is 35.

The square root of 135777131 is about 11652.3444422142. The cubic root of 135777131 is about 513.9752532914.

The spelling of 135777131 in words is "one hundred thirty-five million, seven hundred seventy-seven thousand, one hundred thirty-one".