106231780 has 12 divisors (see below), whose sum is σ = 223086780. Its totient is φ = 42492704.

The previous prime is 106231777. The next prime is 106231813. The reversal of 106231780 is 87132601.

It can be written as a sum of positive squares in 2 ways, for example, as 13147876 + 93083904 = 3626^2 + 9648^2 .

It is a super-2 number, since 2×106231780² = 22570382163936800, which contains 22 as substring.

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, 2655775 + ... + 2655814.

It is an arithmetic number, because the mean of its divisors is an integer number (18590565).

Almost surely, 2^106231780 is an apocalyptic number.

106231780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

106231780 is an abundant number, since it is smaller than the sum of its proper divisors (116855000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

106231780 is a wasteful number, since it uses less digits than its factorization.

106231780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5311598 (or 5311596 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 106231780 is about 10306.8802263343. The cubic root of 106231780 is about 473.6070437476.

It can be divided in two parts, 10623 and 1780, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 106231780 in words is "one hundred six million, two hundred thirty-one thousand, seven hundred eighty".