131155465 has 8 divisors (see below), whose sum is σ = 179870400. Its totient is φ = 89935152.

The previous prime is 131155463. The next prime is 131155477. The reversal of 131155465 is 564551131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131155465 - 2¹ = 131155463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131155463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1873615 + ... + 1873684.

It is an arithmetic number, because the mean of its divisors is an integer number (22483800).

Almost surely, 2^131155465 is an apocalyptic number.

It is an amenable number.

131155465 is a deficient number, since it is larger than the sum of its proper divisors (48714935).

131155465 is an equidigital number, since it uses as much as digits as its factorization.

131155465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3747311.

The product of its digits is 9000, while the sum is 31.

The square root of 131155465 is about 11452.3126485440. The cubic root of 131155465 is about 508.0761363658.

The spelling of 131155465 in words is "one hundred thirty-one million, one hundred fifty-five thousand, four hundred sixty-five".