131455965 has 32 divisors (see below), whose sum is σ = 228556800. Its totient is φ = 64272960.

The previous prime is 131455957. The next prime is 131455969. The reversal of 131455965 is 569554131.

It is a happy number.

It is not a de Polignac number, because 131455965 - 2³ = 131455957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131455969) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1396 + ... + 16274.

It is an arithmetic number, because the mean of its divisors is an integer number (7142400).

Almost surely, 2^131455965 is an apocalyptic number.

131455965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131455965 is a deficient number, since it is larger than the sum of its proper divisors (97100835).

131455965 is a wasteful number, since it uses less digits than its factorization.

131455965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14937.

The product of its digits is 81000, while the sum is 39.

The square root of 131455965 is about 11465.4247631738. The cubic root of 131455965 is about 508.4638706832.

It can be divided in two parts, 13145 and 5965, that added together give a triangular number (19110 = T₁₉₅).

The spelling of 131455965 in words is "one hundred thirty-one million, four hundred fifty-five thousand, nine hundred sixty-five".