123213312031 has 8 divisors (see below), whose sum is σ = 125063737344. Its totient is φ = 121366082040.

The previous prime is 123213312007. The next prime is 123213312037. The reversal of 123213312031 is 130213312321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123213312031 - 2⁹ = 123213311519 is a prime.

It is a super-2 number, since 2×123213312031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123213311993 and 123213312011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123213312037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721075 + ... + 875428.

It is an arithmetic number, because the mean of its divisors is an integer number (15632967168).

Almost surely, 2^123213312031 is an apocalyptic number.

123213312031 is a deficient number, since it is larger than the sum of its proper divisors (1850425313).

123213312031 is a wasteful number, since it uses less digits than its factorization.

123213312031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597661.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 123213312031 its reverse (130213312321), we get a palindrome (253426624352).

The spelling of 123213312031 in words is "one hundred twenty-three billion, two hundred thirteen million, three hundred twelve thousand, thirty-one".