131542101 has 6 divisors (see below), whose sum is σ = 190005270. Its totient is φ = 87694728.

The previous prime is 131542087. The next prime is 131542121. The reversal of 131542101 is 101245131.

It can be written as a sum of positive squares in only one way, i.e., 85655025 + 45887076 = 9255^2 + 6774^2 .

It is not a de Polignac number, because 131542101 - 2⁹ = 131541589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131542121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7307886 + ... + 7307903.

It is an arithmetic number, because the mean of its divisors is an integer number (31667545).

Almost surely, 2^131542101 is an apocalyptic number.

It is an amenable number.

131542101 is a deficient number, since it is larger than the sum of its proper divisors (58463169).

131542101 is a wasteful number, since it uses less digits than its factorization.

131542101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14615795 (or 14615792 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 131542101 is about 11469.1804851088. The cubic root of 131542101 is about 508.5749027475.

Adding to 131542101 its reverse (101245131), we get a palindrome (232787232).

The spelling of 131542101 in words is "one hundred thirty-one million, five hundred forty-two thousand, one hundred one".