101961830 has 8 divisors (see below), whose sum is σ = 183531312. Its totient is φ = 40784728.

The previous prime is 101961803. The next prime is 101961851. The reversal of 101961830 is 38169101.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101961793 and 101961802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5098082 + ... + 5098101.

It is an arithmetic number, because the mean of its divisors is an integer number (22941414).

Almost surely, 2^101961830 is an apocalyptic number.

101961830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101961830 is a deficient number, since it is larger than the sum of its proper divisors (81569482).

101961830 is a wasteful number, since it uses less digits than its factorization.

101961830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10196190.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 101961830 is about 10097.6150649547. The cubic root of 101961830 is about 467.1745836073.

The spelling of 101961830 in words is "one hundred one million, nine hundred sixty-one thousand, eight hundred thirty".