131129075 has 48 divisors (see below), whose sum is σ = 214700544. Its totient is φ = 76915200.

The previous prime is 131129057. The next prime is 131129083. The reversal of 131129075 is 570921131.

It is a de Polignac number, because none of the positive numbers 2^k-131129075 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30722 + ... + 34728.

It is an arithmetic number, because the mean of its divisors is an integer number (4472928).

Almost surely, 2^131129075 is an apocalyptic number.

131129075 is the 9350-th pentagonal number.

131129075 is a deficient number, since it is larger than the sum of its proper divisors (83571469).

131129075 is a wasteful number, since it uses less digits than its factorization.

131129075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4052 (or 4047 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 131129075 is about 11451.1604215468. The cubic root of 131129075 is about 508.0420571438.

The spelling of 131129075 in words is "one hundred thirty-one million, one hundred twenty-nine thousand, seventy-five".