235135131 has 32 divisors (see below), whose sum is σ = 392601600. Its totient is φ = 121608480.

The previous prime is 235135129. The next prime is 235135133. The reversal of 235135131 is 131531532.

It is an interprime number because it is at equal distance from previous prime (235135129) and next prime (235135133).

It is not a de Polignac number, because 235135131 - 2¹ = 235135129 is a prime.

It is a super-2 number, since 2×235135131² = 110577059660774322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (235135133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53080 + ... + 57338.

It is an arithmetic number, because the mean of its divisors is an integer number (12268800).

Almost surely, 2^235135131 is an apocalyptic number.

235135131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

235135131 is a deficient number, since it is larger than the sum of its proper divisors (157466469).

235135131 is a wasteful number, since it uses less digits than its factorization.

235135131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4519.

The product of its digits is 1350, while the sum is 24.

The square root of 235135131 is about 15334.1165705756. The cubic root of 235135131 is about 617.2188394760.

Adding to 235135131 its reverse (131531532), we get a palindrome (366666663).

The spelling of 235135131 in words is "two hundred thirty-five million, one hundred thirty-five thousand, one hundred thirty-one".