101694981 has 32 divisors (see below), whose sum is σ = 144373248. Its totient is φ = 63590400.

The previous prime is 101694979. The next prime is 101695019. The reversal of 101694981 is 189496101.

It is not a de Polignac number, because 101694981 - 2¹ = 101694979 is a prime.

It is a super-2 number, since 2×101694981² = 20683738321180722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101694961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 526821 + ... + 527013.

It is an arithmetic number, because the mean of its divisors is an integer number (4511664).

Almost surely, 2^101694981 is an apocalyptic number.

It is an amenable number.

101694981 is a deficient number, since it is larger than the sum of its proper divisors (42678267).

101694981 is a wasteful number, since it uses less digits than its factorization.

101694981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 101694981 is about 10084.3929415707. The cubic root of 101694981 is about 466.7666728416.

The spelling of 101694981 in words is "one hundred one million, six hundred ninety-four thousand, nine hundred eighty-one".