103685431 has 8 divisors (see below), whose sum is σ = 112121280. Its totient is φ = 95509248.

The previous prime is 103685429. The next prime is 103685443. The reversal of 103685431 is 134586301.

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 103685431 - 2¹ = 103685429 is a prime.

It is a super-2 number, since 2×103685431² = 21501337203311522, 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 = 103685393 and 103685402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103685401) 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, 64086 + ... + 65683.

It is an arithmetic number, because the mean of its divisors is an integer number (14015160).

Almost surely, 2^103685431 is an apocalyptic number.

103685431 is a deficient number, since it is larger than the sum of its proper divisors (8435849).

103685431 is a wasteful number, since it uses less digits than its factorization.

103685431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129833.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 103685431 is about 10182.6043328807. The cubic root of 103685431 is about 469.7923195926.

The spelling of 103685431 in words is "one hundred three million, six hundred eighty-five thousand, four hundred thirty-one".