101542131 has 6 divisors (see below), whose sum is σ = 146671980. Its totient is φ = 67694748.

The previous prime is 101542123. The next prime is 101542157. The reversal of 101542131 is 131245101.

It is not a de Polignac number, because 101542131 - 2³ = 101542123 is a prime.

It is a super-2 number, since 2×101542131² = 20621608736042322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101542531) 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, 5641221 + ... + 5641238.

It is an arithmetic number, because the mean of its divisors is an integer number (24445330).

Almost surely, 2^101542131 is an apocalyptic number.

101542131 is a deficient number, since it is larger than the sum of its proper divisors (45129849).

101542131 is a wasteful number, since it uses less digits than its factorization.

101542131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11282465 (or 11282462 counting only the distinct ones).

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

The square root of 101542131 is about 10076.8115492947. The cubic root of 101542131 is about 466.5327017394.

Adding to 101542131 its reverse (131245101), we get a palindrome (232787232).

The spelling of 101542131 in words is "one hundred one million, five hundred forty-two thousand, one hundred thirty-one".