131101129 has 4 divisors (see below), whose sum is σ = 131229076. Its totient is φ = 130973184.

The previous prime is 131101079. The next prime is 131101133. The reversal of 131101129 is 921101131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124367104 + 6734025 = 11152^2 + 2595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131101129 is a prime.

It is a super-3 number, since 3×131101129³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131108129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62424 + ... + 64489.

It is an arithmetic number, because the mean of its divisors is an integer number (32807269).

Almost surely, 2^131101129 is an apocalyptic number.

It is an amenable number.

131101129 is a deficient number, since it is larger than the sum of its proper divisors (127947).

131101129 is a wasteful number, since it uses less digits than its factorization.

131101129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127946.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 131101129 is about 11449.9401308478. The cubic root of 131101129 is about 508.0059635669.

The spelling of 131101129 in words is "one hundred thirty-one million, one hundred one thousand, one hundred twenty-nine".