131320077 has 16 divisors (see below), whose sum is σ = 210639360. Its totient is φ = 71090352.

The previous prime is 131320073. The next prime is 131320081. The reversal of 131320077 is 770023131.

It is an interprime number because it is at equal distance from previous prime (131320073) and next prime (131320081).

It is not a de Polignac number, because 131320077 - 2² = 131320073 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131320073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164163 + ... + 164960.

It is an arithmetic number, because the mean of its divisors is an integer number (13164960).

Almost surely, 2^131320077 is an apocalyptic number.

It is an amenable number.

131320077 is a deficient number, since it is larger than the sum of its proper divisors (79319283).

131320077 is a wasteful number, since it uses less digits than its factorization.

131320077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329152.

The product of its (nonzero) digits is 882, while the sum is 24.

The square root of 131320077 is about 11459.4972402807. The cubic root of 131320077 is about 508.2886080391.

The spelling of 131320077 in words is "one hundred thirty-one million, three hundred twenty thousand, seventy-seven".