131120535 has 32 divisors (see below), whose sum is σ = 258209280. Its totient is φ = 55329408.

The previous prime is 131120519. The next prime is 131120557. The reversal of 131120535 is 535021131.

It is not a de Polignac number, because 131120535 - 2⁴ = 131120519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46665 + ... + 49394.

It is an arithmetic number, because the mean of its divisors is an integer number (8069040).

Almost surely, 2^131120535 is an apocalyptic number.

131120535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131120535 is a deficient number, since it is larger than the sum of its proper divisors (127088745).

131120535 is a wasteful number, since it uses less digits than its factorization.

131120535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96087.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 131120535 is about 11450.7875275022. The cubic root of 131120535 is about 508.0310278752.

Adding to 131120535 its reverse (535021131), we get a palindrome (666141666).

The spelling of 131120535 in words is "one hundred thirty-one million, one hundred twenty thousand, five hundred thirty-five".