102982931 has 4 divisors (see below), whose sum is σ = 103029264. Its totient is φ = 102936600.

The previous prime is 102982927. The next prime is 102982963. The reversal of 102982931 is 139289201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102982931 - 2² = 102982927 is a prime.

It is a super-2 number, since 2×102982931² = 21210968154701522, 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 = 102982891 and 102982900.

It is not an unprimeable number, because it can be changed into a prime (102982331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19655 + ... + 24336.

It is an arithmetic number, because the mean of its divisors is an integer number (25757316).

Almost surely, 2^102982931 is an apocalyptic number.

102982931 is a deficient number, since it is larger than the sum of its proper divisors (46333).

102982931 is an equidigital number, since it uses as much as digits as its factorization.

102982931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46332.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 102982931 is about 10148.0506009775. The cubic root of 102982931 is about 468.7289195616.

The spelling of 102982931 in words is "one hundred two million, nine hundred eighty-two thousand, nine hundred thirty-one".