123281970 has 32 divisors (see below), whose sum is σ = 338145408. Its totient is φ = 28178688.

The previous prime is 123281941. The next prime is 123281971. The reversal of 123281970 is 79182321.

It is not an unprimeable number, because it can be changed into a prime (123281971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293319 + ... + 293738.

It is an arithmetic number, because the mean of its divisors is an integer number (10567044).

Almost surely, 2^123281970 is an apocalyptic number.

123281970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123281970 is an abundant number, since it is smaller than the sum of its proper divisors (214863438).

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

123281970 is a wasteful number, since it uses less digits than its factorization.

123281970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587074.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 123281970 is about 11103.2414186129. The cubic root of 123281970 is about 497.6987177835.

It can be divided in two parts, 123281 and 970, that added together give a triangular number (124251 = T₄₉₈).

The spelling of 123281970 in words is "one hundred twenty-three million, two hundred eighty-one thousand, nine hundred seventy".