102231019 has 4 divisors (see below), whose sum is σ = 111524760. Its totient is φ = 92937280.

The previous prime is 102230981. The next prime is 102231049. The reversal of 102231019 is 910132201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102231019 is a prime.

It is a super-2 number, since 2×102231019² = 20902362491556722, 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 = 102230987 and 102231005.

It is not an unprimeable number, because it can be changed into a prime (102231049) 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, 4646854 + ... + 4646875.

It is an arithmetic number, because the mean of its divisors is an integer number (27881190).

Almost surely, 2^102231019 is an apocalyptic number.

102231019 is a deficient number, since it is larger than the sum of its proper divisors (9293741).

102231019 is an equidigital number, since it uses as much as digits as its factorization.

102231019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9293740.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 102231019 is about 10110.9356144721. The cubic root of 102231019 is about 467.5853508841.

It can be divided in two parts, 1022 and 31019, that added together give a square (32041 = 179²).

The spelling of 102231019 in words is "one hundred two million, two hundred thirty-one thousand, nineteen".