123383690 has 32 divisors (see below), whose sum is σ = 230538960. Its totient is φ = 47488000.

The previous prime is 123383681. The next prime is 123383713. The reversal of 123383690 is 96383321.

It can be written as a sum of positive squares in 8 ways, for example, as 102799321 + 20584369 = 10139^2 + 4537^2 .

It is a super-2 number, since 2×123383690² = 30447069916032200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123383690.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115760 + ... + 116820.

Almost surely, 2^123383690 is an apocalyptic number.

123383690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123383690 is a deficient number, since it is larger than the sum of its proper divisors (107155270).

123383690 is a wasteful number, since it uses less digits than its factorization.

123383690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 123383690 is about 11107.8211184732. The cubic root of 123383690 is about 497.8355639531.

The spelling of 123383690 in words is "one hundred twenty-three million, three hundred eighty-three thousand, six hundred ninety".