131043465 has 24 divisors (see below), whose sum is σ = 259591488. Its totient is φ = 59905440.

The previous prime is 131043427. The next prime is 131043467. The reversal of 131043465 is 564340131.

131043465 is a `hidden beast` number, since 1 + 310 + 4 + 346 + 5 = 666.

It is not a de Polignac number, because 131043465 - 2⁷ = 131043337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131043467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207691 + ... + 208320.

It is an arithmetic number, because the mean of its divisors is an integer number (10816312).

Almost surely, 2^131043465 is an apocalyptic number.

131043465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131043465 is a deficient number, since it is larger than the sum of its proper divisors (128548023).

131043465 is a wasteful number, since it uses less digits than its factorization.

131043465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416029 (or 416026 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 131043465 is about 11447.4217621262. The cubic root of 131043465 is about 507.9314715773.

Adding to 131043465 its reverse (564340131), we get a palindrome (695383596).

The spelling of 131043465 in words is "one hundred thirty-one million, forty-three thousand, four hundred sixty-five".