123311500351 has 4 divisors (see below), whose sum is σ = 132797000392. Its totient is φ = 113826000312.

The previous prime is 123311500349. The next prime is 123311500393. The reversal of 123311500351 is 153005113321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123311500351 - 2¹ = 123311500349 is a prime.

It is a super-2 number, since 2×123311500351² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123311500651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4742750001 + ... + 4742750026.

It is an arithmetic number, because the mean of its divisors is an integer number (33199250098).

Almost surely, 2^123311500351 is an apocalyptic number.

123311500351 is a deficient number, since it is larger than the sum of its proper divisors (9485500041).

123311500351 is an equidigital number, since it uses as much as digits as its factorization.

123311500351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9485500040.

The product of its (nonzero) digits is 1350, while the sum is 25.

Adding to 123311500351 its reverse (153005113321), we get a palindrome (276316613672).

The spelling of 123311500351 in words is "one hundred twenty-three billion, three hundred eleven million, five hundred thousand, three hundred fifty-one".