1223123310 has 48 divisors (see below), whose sum is σ = 3367190736. Its totient is φ = 306979584.

The previous prime is 1223123303. The next prime is 1223123333. The reversal of 1223123310 is 133213221.

1223123310 is a `hidden beast` number, since 1 + 22 + 312 + 331 + 0 = 666.

It is a super-2 number, since 2×1223123310² = 2992061262930712200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 398184 + ... + 401243.

It is an arithmetic number, because the mean of its divisors is an integer number (70149807).

Almost surely, 2^1223123310 is an apocalyptic number.

1223123310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1223123310 is an abundant number, since it is smaller than the sum of its proper divisors (2144067426).

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

1223123310 is a wasteful number, since it uses less digits than its factorization.

1223123310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799457 (or 799454 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1223123310 is about 34973.1798668637. The cubic root of 1223123310 is about 1069.4407972700.

Adding to 1223123310 its reverse (133213221), we get a palindrome (1356336531).

The spelling of 1223123310 in words is "one billion, two hundred twenty-three million, one hundred twenty-three thousand, three hundred ten".