101538931 has 8 divisors (see below), whose sum is σ = 109463760. Its totient is φ = 93630432.

The previous prime is 101538923. The next prime is 101538949. The reversal of 101538931 is 139835101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 101538931 - 2³ = 101538923 is a prime.

It is a super-2 number, since 2×101538931² = 20620309017245522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101538893 and 101538902.

It is not an unprimeable number, because it can be changed into a prime (101538971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10896 + ... + 17938.

It is an arithmetic number, because the mean of its divisors is an integer number (13682970).

Almost surely, 2^101538931 is an apocalyptic number.

101538931 is a deficient number, since it is larger than the sum of its proper divisors (7924829).

101538931 is a wasteful number, since it uses less digits than its factorization.

101538931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8165.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 101538931 is about 10076.6527676605. The cubic root of 101538931 is about 466.5278009155.

The spelling of 101538931 in words is "one hundred one million, five hundred thirty-eight thousand, nine hundred thirty-one".