123311313320 has 32 divisors (see below), whose sum is σ = 298792798920. Its totient is φ = 45530330880.

The previous prime is 123311313313. The next prime is 123311313347. The reversal of 123311313320 is 23313113321.

It can be written as a sum of positive squares in 4 ways, for example, as 98479226596 + 24832086724 = 313814^2 + 157582^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118568051 + ... + 118569090.

Almost surely, 2^123311313320 is an apocalyptic number.

123311313320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123311313320 is an abundant number, since it is smaller than the sum of its proper divisors (175481485600).

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

123311313320 is a wasteful number, since it uses less digits than its factorization.

123311313320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237137165 (or 237137161 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 123311313320 its reverse (23313113321), we get a palindrome (146624426641).

The spelling of 123311313320 in words is "one hundred twenty-three billion, three hundred eleven million, three hundred thirteen thousand, three hundred twenty".