65131235 has 16 divisors (see below), whose sum is σ = 84823200. Its totient is φ = 47723520.

The previous prime is 65131229. The next prime is 65131243. The reversal of 65131235 is 53213156.

It is not a de Polignac number, because 65131235 - 2¹⁴ = 65114851 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4691 + ... + 12339.

It is an arithmetic number, because the mean of its divisors is an integer number (5301450).

Almost surely, 2^65131235 is an apocalyptic number.

65131235 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

65131235 is a deficient number, since it is larger than the sum of its proper divisors (19691965).

65131235 is a wasteful number, since it uses less digits than its factorization.

65131235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7798.

The product of its digits is 2700, while the sum is 26.

The square root of 65131235 is about 8070.3924935532. The cubic root of 65131235 is about 402.3429887961.

The spelling of 65131235 in words is "sixty-five million, one hundred thirty-one thousand, two hundred thirty-five".