131051235 has 24 divisors (see below), whose sum is σ = 243917136. Its totient is φ = 59908800.

The previous prime is 131051233. The next prime is 131051257. The reversal of 131051235 is 532150131.

It is not a de Polignac number, because 131051235 - 2¹ = 131051233 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (131051231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88416 + ... + 89885.

It is an arithmetic number, because the mean of its divisors is an integer number (10163214).

Almost surely, 2^131051235 is an apocalyptic number.

131051235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131051235 is a deficient number, since it is larger than the sum of its proper divisors (112865901).

131051235 is a wasteful number, since it uses less digits than its factorization.

131051235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178323 (or 178316 counting only the distinct ones).

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

The square root of 131051235 is about 11447.7611348246. The cubic root of 131051235 is about 507.9415103573.

The spelling of 131051235 in words is "one hundred thirty-one million, fifty-one thousand, two hundred thirty-five".