102195731 has 8 divisors (see below), whose sum is σ = 112474224. Its totient is φ = 92081920.

The previous prime is 102195707. The next prime is 102195733. The reversal of 102195731 is 137591201.

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 102195731 - 2¹⁰ = 102194707 is a prime.

It is a super-2 number, since 2×102195731² = 20887934869248722, 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 = 102195694 and 102195703.

It is not an unprimeable number, because it can be changed into a prime (102195733) 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, 39866 + ... + 42351.

It is an arithmetic number, because the mean of its divisors is an integer number (14059278).

Almost surely, 2^102195731 is an apocalyptic number.

102195731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102195731 is a deficient number, since it is larger than the sum of its proper divisors (10278493).

102195731 is a wasteful number, since it uses less digits than its factorization.

102195731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82341.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 102195731 is about 10109.1904225808. The cubic root of 102195731 is about 467.5315444794.

The spelling of 102195731 in words is "one hundred two million, one hundred ninety-five thousand, seven hundred thirty-one".