101990361 has 32 divisors (see below), whose sum is σ = 162518400. Its totient is φ = 56161280.

The previous prime is 101990333. The next prime is 101990363. The reversal of 101990361 is 163099101.

It is a cyclic number.

It is not a de Polignac number, because 101990361 - 2¹³ = 101982169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101990363) 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, 13135 + ... + 19403.

It is an arithmetic number, because the mean of its divisors is an integer number (5078700).

Almost surely, 2^101990361 is an apocalyptic number.

101990361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

101990361 is a deficient number, since it is larger than the sum of its proper divisors (60528039).

101990361 is a wasteful number, since it uses less digits than its factorization.

101990361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6329.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 101990361 is about 10099.0277254793. The cubic root of 101990361 is about 467.2181545364.

The spelling of 101990361 in words is "one hundred one million, nine hundred ninety thousand, three hundred sixty-one".