122428061831 has 4 divisors (see below), whose sum is σ = 122520882000. Its totient is φ = 122335241664.

The previous prime is 122428061803. The next prime is 122428061837. The reversal of 122428061831 is 138160824221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138160824221 = 7 ⋅19737260603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122428061831 is a prime.

It is a super-2 number, since 2×122428061831² (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 (122428061837) 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, 46408106 + ... + 46410743.

It is an arithmetic number, because the mean of its divisors is an integer number (30630220500).

Almost surely, 2^122428061831 is an apocalyptic number.

122428061831 is a deficient number, since it is larger than the sum of its proper divisors (92820169).

122428061831 is an equidigital number, since it uses as much as digits as its factorization.

122428061831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92820168.

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 122428061831 in words is "one hundred twenty-two billion, four hundred twenty-eight million, sixty-one thousand, eight hundred thirty-one".