122431251345 has 32 divisors (see below), whose sum is σ = 214534051200. Its totient is φ = 59252250624.

The previous prime is 122431251337. The next prime is 122431251347. The reversal of 122431251345 is 543152134221.

It is not a de Polignac number, because 122431251345 - 2³ = 122431251337 is a prime.

It is a super-2 number, since 2×122431251345² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122431251347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5309280 + ... + 5332289.

It is an arithmetic number, because the mean of its divisors is an integer number (6704189100).

Almost surely, 2^122431251345 is an apocalyptic number.

122431251345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122431251345 is a deficient number, since it is larger than the sum of its proper divisors (92102799855).

122431251345 is a wasteful number, since it uses less digits than its factorization.

122431251345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10641649.

The product of its digits is 28800, while the sum is 33.

Adding to 122431251345 its reverse (543152134221), we get a palindrome (665583385566).

The spelling of 122431251345 in words is "one hundred twenty-two billion, four hundred thirty-one million, two hundred fifty-one thousand, three hundred forty-five".