122028031 has 4 divisors (see below), whose sum is σ = 122080464. Its totient is φ = 121975600.

The previous prime is 122028019. The next prime is 122028097. The reversal of 122028031 is 130820221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122028031 is a prime.

It is a super-2 number, since 2×122028031² = 29781680699473922, which 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 (122028001) 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, 22555 + ... + 27436.

It is an arithmetic number, because the mean of its divisors is an integer number (30520116).

Almost surely, 2^122028031 is an apocalyptic number.

122028031 is a deficient number, since it is larger than the sum of its proper divisors (52433).

122028031 is an equidigital number, since it uses as much as digits as its factorization.

122028031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52432.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 122028031 is about 11046.6298480577. The cubic root of 122028031 is about 496.0055483575.

Adding to 122028031 its reverse (130820221), we get a palindrome (252848252).

The spelling of 122028031 in words is "one hundred twenty-two million, twenty-eight thousand, thirty-one".